Online SMS Sending — A Beginner's Guide to Sending Texts from Your Browser
- TechTo Networks
- Jul 4, 2025
- 25 min read
Updated: 14 minutes ago
You do not need a phone in your hand, a SIM card, or a developer on your team to send SMS messages to your customers. You need a browser, an internet connection, and an online SMS platform — and you can be sending texts within minutes of reading this guide.
This is the complete beginner's guide to sending SMS online in India. It covers what online SMS sending is, how it works, the difference between free tools and business platforms, a step-by-step walkthrough of sending your first message, what you will see in your delivery reports, and the most common mistakes to avoid.
No technical background required. Every step is explained in plain language.
What Does "Send SMS Online" Actually Mean?
"Sending SMS online" means composing and dispatching a text message to someone's mobile phone using a website or web-based platform — instead of typing on your phone's messaging app.
You log into a website from your laptop, desktop, or tablet. You type the message. You add the recipient's number (or upload a list of numbers). You click Send. The platform routes your message through carrier networks, and the recipient receives it as a standard SMS on their phone — exactly as if you had sent it from your own mobile.
From the recipient's perspective, there is no difference between receiving an SMS from an online platform and receiving one from a phone. The message lands in their inbox like any other text.
Why would you send SMS from a browser instead of your phone?
There are several practical reasons:
Sending to many people at once. Typing individual texts from a phone for 500 customers is not feasible. An online platform lets you upload a list and send to everyone simultaneously.
Full keyboard convenience. Composing a long, carefully worded message is far easier on a laptop keyboard than a touchscreen.
Scheduling for later. Online platforms let you compose a message now and schedule it to send at a specific date and time — you cannot do this from a standard phone messaging app.
Tracking delivery. Online SMS platforms show you exactly which messages were delivered, which failed, and which were read (if link tracking is enabled). Your phone's messaging app shows nothing once a message is sent.
Using a business sender name. Instead of your personal mobile number appearing as the sender, online business SMS platforms display your brand name (e.g., MYSHOP or CLINIC) — which recipients immediately recognise and trust.
Keeping it off your personal phone. Business communications sent from your personal number expose your personal number to thousands of customers and cannot be managed by a team. Online platforms give you a business identity that is separate from your personal device.
Free Online SMS vs. Business Online SMS — Understanding the Difference
When you search "send SMS online," you will encounter two very different types of services. Understanding which one you need will save you hours of confusion.
Free Online SMS Tools (for Personal, One-Off Use)
These are websites like Globfone, OpenTextingOnline, and similar services that let anyone send a text message without creating an account or paying anything. You visit the website, type a number and a message, and hit send.
What they are good for:
Sending a single text to a friend when your phone is not with you
Quick one-off tests
Personal, informal communication
Why they do not work for business:
You can typically only send to one person at a time — no bulk sending
Messages often come from unknown or generic numbers that recipients do not recognise, trust, or may block
No delivery confirmation — you have no way of knowing if the message arrived
No scheduling — you must be present to send
No contact management — no lists, no history, no organisation
Not legally compliant in India — commercial messages sent through free personal tools are not DLT-registered and will be blocked by Indian carriers
Daily limits — most free tools cap messages at 5–10 per day per IP address
Privacy risks — your message content and the recipient's number may be logged
Bottom line on free tools: They are suitable for sending one personal message. They are completely unsuitable for business communication of any kind.
Business Online SMS Platforms (for Professional Use)
These are web-based platforms like TechTo Networks that are built for businesses. You create an account, access a dashboard from any browser, and manage your SMS communications professionally.
What they include:
Send to unlimited contacts simultaneously
Upload contact lists from a spreadsheet (CSV file)
Display your brand name as the sender
TRAI DLT compliance management (mandatory for business SMS in India)
Delivery reports showing exactly who received your message
Scheduling — set a future date and time for campaigns
Two-way messaging — receive customer replies
Message templates for repeated communications
Analytics — click tracking, opt-out rate, engagement
Cost: Business SMS platforms are not free, but the pricing is very affordable — typically ₹0.10 to ₹0.22 per message. A campaign to 10,000 customers might cost ₹1,000 to ₹2,200 total. Most platforms offer free trial credits so you can test before spending anything.
This guide focuses on business online SMS — the type that Indian businesses actually need.
Before You Send: Three Things You Need to Know About SMS in India
Before you create your account and send your first message, there are three things specific to India that every first-time user needs to understand. These are not complicated — but skipping them is the most common reason why first-time senders end up with messages that never arrive.
1. Commercial SMS in India Requires DLT Registration
India's telecom regulator, TRAI (Telecom Regulatory Authority of India), requires every business sending commercial text messages to register on the DLT (Distributed Ledger Technology) portal before their messages can be delivered.
DLT registration involves three things:
Registering your business entity (your company or trade name, with verified documents)
Registering your Sender ID — the name that appears as the "from" on your recipients' phones (e.g., MYSHOP, CLINIC, SCHOOL)
Registering your message templates — the exact structure of each message you plan to send
Without registration, your messages will be blocked at the carrier level and never reach your recipients. The registration process takes about 5–7 business days for first-time registrations. TechTo Networks guides you through this as part of onboarding — you do not need to figure it out alone.
If you are just testing with your own number first: You can send test messages to your own verified number before DLT registration is complete. The DLT requirement applies to commercial messages to external recipients.
2. There Are Two Types of Business SMS — and the Rules Are Different
Promotional SMS is for marketing messages — sales, offers, announcements. Rules:
Can only be sent between 9 AM and 9 PM
Cannot reach DND (Do Not Disturb) registered numbers
The sender ID is a 6-digit number, not a brand name
Transactional SMS is for service messages — OTPs, order confirmations, appointment reminders. Rules:
Can be sent any time of day or night
Can reach all numbers including DND-registered ones
The sender ID is a branded 6-character name (e.g., MYSHOP)
When you create a campaign in TechTo Networks, you select the type — the platform automatically applies the correct routing, sender ID, and time rules. You do not need to remember the technical details.
3. You Need Your Customers' Permission
For promotional SMS campaigns, you should only message customers who have opted in — people who have given you their number and indicated they are willing to receive messages from your business. This is both a TRAI requirement and good practice.
For transactional messages (order updates, appointment reminders), the customer's existing relationship with your business constitutes implied consent — no separate opt-in is required.
Step-by-Step: How to Send SMS Online Using TechTo Networks
This walkthrough takes you from zero — no account, no experience — to your first sent SMS campaign. Follow each step in order.
Step 1 — Create Your Free Account
Time required: 2 minutes
Open your browser and go to techtonetworks.com/register.
You will see a registration form. Fill in:
Your full name
Your business email address (use a business email, not Gmail/Yahoo — this is important for DLT registration later)
Your mobile number (for verification)
Your business name
Click Create Account. TechTo sends a one-time password (OTP) to your mobile number. Enter the OTP in the verification screen. Your account is created.
What you get immediately on signup:
Full access to the TechTo Networks dashboard
100 free SMS credits — no credit card required
Access to the sandbox environment (for testing without sending real messages)
A guide from TechTo's onboarding team to assist with DLT registration
What your dashboard looks like: When you log in for the first time, you see the main TechTo dashboard. The left-hand navigation panel has five sections:
Campaigns — where you create and manage all your SMS sends
Contacts — where you upload and organise your customer list
Templates — where your DLT-registered message templates are stored
Reports — where you see delivery results after sending
Settings — where you manage your account, sender IDs, credits, and API keys
The main area shows your account summary: credit balance, total messages sent, recent campaign performance, and a quick-start guide.
Step 2 — Add and Verify Your Own Mobile Number
Time required: 2 minutes
Before sending to customers, verify your own mobile number. This serves two purposes: it is your primary contact for account notifications, and it becomes your first test recipient.
Go to Settings → Profile → Mobile Number. Enter your number (with country code — +91 for India) and click Verify. Enter the OTP that arrives on your phone. Your number is now verified.
Step 3 — Understand Your Credit Balance
Time required: 1 minute
Your 100 free credits are displayed at the top right of the dashboard. Each credit is equivalent to one SMS segment — a single message of up to 160 characters in English (GSM-7 encoding).
How credits work:
You pay per message segment, not per campaign
A 150-character English message to 50 people costs 50 credits
A 170-character English message (which splits into 2 segments) to 50 people costs 100 credits
A Hindi message of 65 characters to 50 people costs 50 credits (one Unicode segment)
A Hindi message of 80 characters to 50 people costs 100 credits (two Unicode segments)
The campaign composer shows you the exact credit cost of your campaign before you confirm the send, so there are no surprises.
To add more credits: Go to Settings → Credits → Add Credits. Choose a credit pack and pay via UPI, Net Banking, or card.
Step 4 — Add Your First Contact (or Upload a List)
Time required: 2–10 minutes depending on list size
There are four ways to add recipients in TechTo Networks:
Option A — Enter numbers manually (best for beginners testing) Click Contacts → + New Contact. Enter the mobile number (+919876543210 format) and optionally the name and any custom fields. Click Save. Repeat for any additional test numbers. This is the quickest way to add 2–5 numbers for your first test send.
Option B — Upload a CSV file (best for bulk campaigns) If you have your customer list in a spreadsheet (Microsoft Excel or Google Sheets), save it as a CSV file and upload it.
Your CSV file should have at minimum one column: the mobile number. Additional columns — customer name, city, last purchase amount, or any other data you want to use for personalisation — are optional but powerful.
Required CSV format:
mobile,first_name,city
9876543210,Rahul,Mumbai
8765432109,Priya,Delhi
7654321098,Arjun,Chennai
To upload:
Click Contacts → + New List
Give your list a name (e.g., "All Customers July 2025" or "Mumbai Buyers")
Click Upload CSV and select your file
TechTo shows you a preview of the first 5 rows
Map the columns: which column is the mobile number? Which is the first name?
Click Import
TechTo automatically:
Formats all numbers to the correct E.164 international format (+91XXXXXXXXXX for India)
Removes duplicate numbers
Flags any numbers that appear invalid (wrong length, non-numeric characters)
Shows you the final import count: "4,892 contacts imported. 45 duplicates removed. 63 invalid numbers skipped."
Option C — Create a segment from an existing list After uploading a list, you can filter it by any column to create a targeted segment. For example: filter your full customer list to show only customers from Mumbai who purchased in the last 60 days. Save this as a named segment. You can use segments as the audience for specific campaigns without managing multiple separate lists.
Option D — Use TechTo's opt-in form Go to Contacts → Opt-in Forms → Create Form to generate an embeddable sign-up form for your website. When a customer fills in their number and submits the form, they are automatically added to a specified contact list in your TechTo account.
Step 5 — Choose Your Message Type
Time required: 1 minute
Click Campaigns → + New Campaign.
The first screen asks you to choose the campaign type:
Promotional — for marketing messages: sales, offers, announcements, events. This type:
Can only send between 9 AM and 9 PM
Automatically filters DND-registered numbers from your recipient list
Uses your registered promotional sender ID (a 6-digit number)
Transactional — for service messages: order updates, appointment reminders, payment confirmations, account alerts. This type:
Can send at any time, including nights and weekends
Reaches all numbers including DND-registered ones
Uses your branded alphanumeric sender ID (e.g., MYSHOP)
OTP — for one-time passwords and verification codes. Uses a dedicated express delivery route for sub-3-second delivery.
For your first test send: Select Promotional if you want to test a marketing-style message, or Transactional if you are testing a service notification.
Give your campaign a name — this is internal only, not visible to recipients. Use something descriptive: "Diwali Sale Announcement - October 2025" or "Appointment Reminder Test - July."
Click Next.
Step 6 — Compose Your Message
Time required: 5–10 minutes
This is the most important step. What you write determines whether recipients read and act on your message.
The message composer screen shows:
A text input box for your message
A live character counter (e.g., "132 / 160 characters")
A segment counter (e.g., "1 segment")
An encoding indicator (GSM-7 for English, Unicode for regional scripts)
An estimated cost display ("This campaign will use approximately 4,892 credits")
A live mobile preview — a simulated phone screen showing exactly how your message will appear on an iPhone and Android device, updated as you type
Option A — Compose a new message If you have not yet registered DLT templates (first-time users testing with their own number), type your message directly in the text box.
For a simple test, try:
"Hi! This is a test message from TechTo Networks. If you received this, your setup is working. -MYSHOP"
Option B — Use a DLT-registered template Once your DLT templates are registered and approved, composing becomes easier. Click Select Template and choose from your approved templates. The template text populates the message field with the fixed content and {#var#} placeholder markers.
You then map each placeholder to a column from your contact list:
The first {#var#} (customer name) → maps to the first_name column in your CSV
The second {#var#} (offer code) → maps to a fixed value you type in, or a custom column
The result: every recipient receives a personalised message. "Hi Rahul, your exclusive Diwali offer is SAVE30" and "Hi Priya, your exclusive Diwali offer is SAVE25" — generated automatically, at scale.
Rules for writing effective SMS messages:
Keep it under 160 characters for English messages. The character counter turns orange as you approach 160 and red when you exceed it. A message over 160 characters is split into two segments and billed as two messages. For promotional campaigns especially, keeping the message in one segment saves money and avoids potential splitting issues on older handsets.
Use plain English characters to stay in GSM-7 encoding. The following characters trigger Unicode encoding (reducing your limit from 160 to 70 characters per segment):
Curly or "smart" quotes: " " — replace with straight quotes "
Em-dashes: — — replace with hyphens -
Ellipsis character: … — replace with three full stops ...
Any emoji
Any regional script character (Hindi, Tamil, etc.)
If you intentionally want to write in Hindi or another regional language, the encoding switches to Unicode automatically and the character limit adjusts to 70 per segment. This is correct behaviour.
Be specific and include one clear call to action. "40% off all orders today. Code: SAVE40. Shop: bit.ly/store40. -MYSHOP" beats "Great discounts available for you now. Please visit our website." every time.
Always include your brand name. Even if your sender ID shows your brand name, including it in the message body reinforces trust: "Your appointment at City Dental Clinic is confirmed for 10 AM on Friday. -DENTAL"
For promotional messages, include an opt-out option. "Reply STOP to unsubscribe" is both good practice and increasingly expected by customers.
Viewing the message preview: The preview panel on the right of the composer shows:
How the message appears on an Android phone (full screen view)
How it appears on an iPhone (bubble view)
The sender ID as it will appear to the recipient
The character count, segment count, and estimated cost
Check the preview carefully before proceeding. Look for:
{#var#} placeholders that did not get filled in (a mapping error)
Unexpected characters that switched the encoding from GSM-7 to Unicode
Message length that puts important content in a second segment
When you are satisfied with the message, click Next.
Step 7 — Select Your Recipients
Time required: 1–2 minutes
On the Recipients screen, select who will receive this campaign.
Options:
Existing Contact List — select a list you uploaded previously. The screen shows the list name and total contact count.
Existing Segment — select a filtered segment you created from a list. The screen shows the segment name and filtered contact count.
Upload New CSV — upload a one-time list specific to this campaign. Use this when you have a fresh export from your CRM or spreadsheet for this specific send.
Enter Numbers Manually — type or paste up to 10 numbers directly. Best for testing with a small group before a full campaign send.
Test Send — enter 1–5 of your own numbers to test the message before sending to your full list. This is always recommended for your first campaign. You will see the message exactly as your customers will, including the sender ID and any personalisation.
DND filter notification (Promotional campaigns): For promotional campaign types, TechTo automatically shows you:
"After DND filtering, your campaign will reach approximately 8,240 of your 10,000 contacts."
This tells you how many customers will actually receive your message — and therefore how many credits will be used — before you confirm. You will not be charged for DND-filtered numbers.
Click Next.
Step 8 — Set the Send Time
Time required: 1 minute
Choose when to send your campaign:
Send Now — the campaign dispatches immediately after you confirm. Use this for time-sensitive messages where every minute of delay matters.
Schedule for Later — pick a date and time from the calendar picker. TechTo queues the campaign and dispatches automatically at the scheduled time without you needing to be online. You can schedule days, weeks, or months in advance.
For promotional campaigns: The scheduling screen enforces TRAI's 9 AM–9 PM window. If you try to schedule a promotional campaign for 10 PM, TechTo displays an error and prevents the schedule. This is a built-in compliance guardrail — you cannot accidentally send at a restricted time.
Recommended send times by campaign type:
What you are sending | Best time window |
Retail sale or offer | 11 AM – 1 PM or 7 PM – 8:30 PM |
Restaurant / food offer | 11 AM – 12 PM or 6 PM – 7 PM |
Appointment reminder | 8 AM – 9 AM (day before) |
Payment reminder | 10 AM or 6 PM |
Event announcement | 9 AM – 11 AM (day of or day before) |
New product launch | 10 AM – 12 PM |
Win-back campaign | 6 PM – 8 PM |
Click Next.
Step 9 — Review the Campaign Summary
Time required: 2 minutes
Before sending, TechTo shows you a complete campaign summary:
Campaign Name: Diwali Sale Announcement - October 2025
Type: Promotional
Sender ID: 567890
Template: tmpl_promo_diwali_2025 (Approved ✓)
Recipients: 8,240 (after DND filter from 10,000)
Segments per msg: 1
Total credits used: 8,240
Credits remaining: 1,760
Scheduled: 31-Oct-2025 at 11:00 AM IST
Check every line:
Template status says Approved ✓ — this is critical. If it says "Pending" or "Rejected," do not send. Wait for DLT approval or contact TechTo support.
Recipient count looks correct — if you uploaded 10,000 contacts and the post-DND count shows 0 or an unexpectedly low number, go back and check your contact list and campaign type selection.
Credits remaining is positive — if you do not have enough credits, TechTo prevents the send and prompts you to top up first. You cannot accidentally overdraft.
Scheduled time is correct — double-check the date, the time, and whether it is AM or PM.
When everything looks correct, click Confirm Campaign.
For scheduled campaigns, TechTo displays: "Campaign confirmed. It will be dispatched on 31-Oct-2025 at 11:00 AM IST. You can cancel or modify it from the Campaigns section before that time."
For immediate sends, dispatch begins within seconds of confirmation.
Step 10 — Watch the Live Delivery Monitor
Time required: Ongoing (check within 15–30 minutes)
After sending, go to Campaigns → [Your Campaign Name] → Live View.
The live delivery monitor updates every 30 seconds and shows the real-time status of every message in your campaign:
Campaign: Diwali Sale Announcement
Status: Dispatching
Messages sent: 8,240
✓ Delivered: 7,918 (96.1%)
⏳ Pending: 182 (2.2%)
✗ Failed: 140 (1.7%)
Invalid number: 82
Network error: 41
Carrier blocked: 17
What each status means:
Delivered (green): The carrier confirmed the message reached the recipient's handset. This is the gold-standard confirmation — not just "sent from our server" but "received by the phone."
Pending (yellow): TechTo sent the message to the carrier, but delivery confirmation has not been received yet. This happens when the recipient's phone is switched off, out of network coverage, or the carrier's network is momentarily busy. Pending messages are automatically retried for up to 48 hours — when the phone comes back online, the message is delivered.
Failed (red): Delivery failed permanently. The failure reason is shown:
Invalid number — the phone number does not exist or has been disconnected. Clean these from your list to avoid paying for them in future campaigns.
Network error — a temporary carrier connectivity issue. TechTo retries automatically; this status appears if all retries exhausted.
Carrier blocked — the most important failure type to investigate. This typically means a DLT issue — either the template is not approved, the sender ID is not registered, or the message content does not match the registered template. Contact TechTo support if you see this.
A good delivery rate is above 95%. Rates between 90–95% are typical for a list that has not been recently cleaned. Rates below 90% usually indicate list quality issues (outdated numbers) or a DLT compliance problem.
You are not charged for failed or pending-expired messages.
Step 11 — Read Your Campaign Report
Time required: 10 minutes (after campaign completes)
Once all messages have reached a final status (typically 48 hours after send), your full campaign report is available under Reports → [Your Campaign Name].
What the report shows:
Delivery summary:
Metric | Your Campaign | What It Means |
Sent | 8,240 | Messages dispatched from TechTo |
Delivered | 7,918 (96.1%) | Carrier-confirmed delivery to handset |
Pending expired | 28 (0.3%) | Phone offline for more than 48 hours |
Failed | 140 (1.7%) | Permanently undeliverable |
DND filtered | 1,760 | Removed before send (not charged) |
Engagement metrics (if link tracking was enabled):
Metric | Your Campaign | What It Means |
Unique clicks | 784 | Individuals who tapped your link |
Click-through rate | 9.9% | Clicks ÷ Delivered messages |
Click time distribution | Peaks 11-12 AM | When most clicks happened |
Opt-out tracking:
Metric | Your Campaign | Benchmark |
Opt-outs | 14 | — |
Opt-out rate | 0.18% | Good (under 0.5% is healthy) |
Exporting your report: Click Export Report to download a CSV with every recipient's number, delivery status, delivery timestamp, failure reason (if any), and click status. This is useful for updating your CRM, removing failed numbers from future campaigns, and identifying who clicked for follow-up.
Understanding Link Tracking — How to Know If Your Message Drove Action
Knowing a message was delivered is useful. Knowing it was acted on is more useful. TechTo's link tracking converts every URL in your message into a tracked short link that records who clicked, when, and from which device.
How to enable link tracking: When composing your message, paste your full URL (e.g., www.mystore.in/diwali-sale) into the message body. TechTo detects the URL and offers: "Track this link? Your URL will be replaced with a short tracked link (ttn.ly/abc123)." Click Yes, track this link.
Your message becomes:
"Diwali Sale is LIVE! 40% off all orders. Shop now: ttn.ly/abc123. Valid 24 hours. -567890"
When a recipient clicks ttn.ly/abc123, TechTo records the click and redirects them to your original destination URL. In your campaign report, you see:
Total clicks on this link
Unique clickers (deduplicated — one person clicking three times counts once)
Click time chart (when during the day clicks peaked)
Device type split (Android vs. iPhone)
Geographic distribution (if location data is available)
What a good CTR looks like:
Promotional campaign with a strong offer: 8–15% CTR
Win-back campaign to lapsed customers: 5–10% CTR
Transactional message with a relevant link (track your order): 20–35% CTR
General announcement without a specific offer: 3–6% CTR
If your CTR is below 3% on a promotional campaign, the message either went to the wrong audience (poor targeting) or the offer was not compelling enough (weak copy or a discount customers have seen many times before).
Common Mistakes Beginners Make — and How to Avoid Each One
After your first send, these are the issues most often encountered by first-time users. Read each one before your campaign goes out.
Mistake 1: Sending a Promotional Message Outside 9 AM–9 PM
TRAI rules restrict promotional SMS to between 9 AM and 9 PM. TechTo's scheduler blocks this for planned campaigns, but if you click "Send Now" late in the evening without thinking, you may attempt to send outside the window.
Fix: TechTo prevents this automatically. But be mindful: schedule promotional campaigns to finish dispatching by 8:45 PM, not just to start by 9 PM. A large batch that starts at 8:50 PM may still be sending at 9:05 PM — and those messages will be blocked.
Mistake 2: Not Running a Test Send First
You send to 50,000 contacts. The delivery report shows {name} appearing literally in every message instead of the customer's name. A mapping error in the personalisation setup caused every message to display the placeholder instead of the actual data.
Fix: Always use Test Send to send to 3–5 of your own numbers before confirming a full campaign. Read the received message carefully. Check that the sender ID shows correctly, personalisation filled in properly, the link resolves correctly, and the character count is what you expected.
Mistake 3: Uploading a CSV Without a Header Row
Your CSV has mobile numbers starting from row 1 with no column header. TechTo cannot map the columns automatically and displays an error on upload or silently misidentifies the data columns.
Fix: Always include a header row as the first line of your CSV. The first row should contain column names (e.g., mobile, first_name, city). Data starts from row 2.
Mistake 4: Including Characters That Trigger Unicode Encoding
Your message is 158 characters of English text — safely under the 160-character limit. But you pasted it from a Word document, which inserted "smart quotes" (" and ") around some text. The encoding switches from GSM-7 to Unicode, cutting the per-segment limit from 160 to 70 characters. Your one-segment message is now three segments, and you are billed 3× what you expected.
Fix: Check the encoding indicator in the composer. If it shows Unicode and you expected GSM-7, search the message for:
Smart/curly quotes → replace with straight quotes "
Em-dash (—) → replace with hyphen -
Ellipsis character (…) → replace with three stops ...
Any emoji
Mistake 5: Not Cleaning Your Contact List
You upload a spreadsheet with 15,000 numbers — but 2,000 of them are landlines (8-digit numbers), 500 are formatted with spaces (98765 43210), and 300 are duplicates. TechTo handles formatting and duplicates automatically, but landlines cannot receive SMS and appear as "Invalid Number" failures. You lose credits on numbers that can never receive a message.
Fix: Before uploading, filter your spreadsheet for numbers that are exactly 10 digits and start with 6, 7, 8, or 9 (valid Indian mobile prefixes). Remove anything shorter, longer, or starting with 0 (landlines) or 1–5.
Mistake 6: Forgetting to Add Credits Before a Campaign
You build a campaign for 20,000 contacts, get to the summary screen, and see: "Insufficient credits. You need 20,000 credits. Current balance: 4,200." Your campaign cannot proceed without topping up first.
Fix: Before building any campaign, check your credit balance in the top-right corner of the dashboard. For 20,000 promotional messages at ₹0.15/message, you need ₹3,000 in credits. Top up before starting the campaign setup so you are not interrupted at the final step.
Mistake 7: Using the Wrong Campaign Type for Your Content
You are sending an appointment reminder (a transactional message) but selected "Promotional" as the campaign type. Your message goes through the promotional route, which filters out DND numbers — and half your patients who are on the DND list never receive their appointment reminder.
Fix: Match the campaign type to the content. Service alerts, confirmations, OTPs, and reminders = Transactional. Offers, sales, promotions = Promotional. The type selection controls the routing, sender ID, timing restrictions, and DND filtering — it is the most important selection in the entire campaign setup.
Mistake 8: Ignoring the Opt-Out Rate
Your first campaign has a 2.8% opt-out rate — meaning 2.8% of recipients replied STOP and unsubscribed. This is dangerously high (anything above 0.5% should be investigated). You ignore it and run the same campaign next month. By month 3, you have lost 15% of your list and carrier filtering has increased against your sender ID.
Fix: Check opt-out rate in the Reports section after every campaign. A rate above 0.5% means something was wrong: the message was irrelevant, the audience was too broad, the frequency was too high, or the timing was intrusive. Investigate and adjust before the next campaign.
Special Topic: Sending SMS Online in Regional Languages
If your customer base speaks Hindi, Tamil, Telugu, Kannada, Malayalam, or any other Indian regional language, sending messages in their language significantly increases readability, trust, and response rates — particularly in Tier 2 and Tier 3 markets.
How to compose a regional language SMS in TechTo Networks:
In the campaign composer, click inside the message text box.
Switch your keyboard to the regional script — either your device's regional keyboard, or a transliteration tool like Google Input Tools.
Type your message in the regional script (e.g., Devanagari for Hindi).
The encoding indicator automatically switches from GSM-7 to Unicode.
The character counter adjusts: single segment limit drops from 160 to 70 characters.
The mobile preview shows the message in the regional script.
Character budget for regional languages:
Language | Characters per segment | Characters (multi-part segment) |
Hindi (Devanagari) | 70 | 67 per segment |
Tamil | 70 | 67 per segment |
Telugu | 70 | 67 per segment |
Kannada | 70 | 67 per segment |
Malayalam | 70 | 67 per segment |
Bengali | 70 | 67 per segment |
Gujarati | 70 | 67 per segment |
Punjabi (Gurmukhi) | 70 | 67 per segment |
DLT template registration for regional languages: Your DLT template must be registered in the same regional script. Submit the template on the DLT portal in Devanagari (for Hindi), Tamil script (for Tamil), and so on. Do not submit the English transliteration of a regional language message — the carrier matching checks the actual script.
Sending SMS Online from a Mobile Browser
You do not need to be at a laptop or desktop to use TechTo Networks. The dashboard is fully responsive and works in any mobile browser.
How to access TechTo on your phone:
Open Safari (iPhone) or Chrome (Android)
Navigate to techtonetworks.com
Log in with your credentials
The dashboard adapts to your screen size
What works on mobile browser:
Viewing campaign reports and delivery status
Creating simple single-number or small-list campaigns
Adding individual contacts
Checking credit balance
Scheduling a campaign you previously set up
What is better on desktop:
Uploading large CSV contact lists
Composing long message copy (physical keyboard is faster)
Reviewing detailed analytics with multiple data columns
Setting up automation workflows and complex segments
For occasional checks and quick sends, the mobile browser experience is perfectly adequate. For building serious campaigns, the desktop browser provides a better working environment.
After Your First Campaign: What to Do Next
Successfully sending your first campaign is the beginning, not the end. Here is what to focus on in the weeks after your first send to build toward a professional SMS communication programme.
Week 1 — Analyse the results: Open your campaign report. Note the delivery rate, CTR (if you used a tracked link), and opt-out rate. Compare them to the benchmarks in this guide. Identify whether the message reached the right people and whether the call to action drove the clicks you expected.
Week 2 — Clean your list: Export your campaign report and filter for "Invalid Number" failures. Remove these from your master contact list — they are disconnected or non-existent numbers that will never receive messages. Removing them keeps your delivery rate accurate and prevents wasting credits on future campaigns.
Week 2 — Set up your first automation: The most impactful use of online SMS after your first broadcast campaign is automation — messages that send themselves based on customer actions without you needing to be present. Go to Campaigns → Automations → + New Automation and set up:
An appointment reminder (triggers 24 hours before each scheduled appointment)
An order confirmation (triggers when an order is placed in your connected store)
A welcome message (triggers when a new contact is added to your list)
Even a single automation, running in the background, compounds value month after month with zero additional effort.
Week 3 — Grow your contact list: Your SMS programme is only as good as the quality and size of your opted-in contact list. Set up a TechTo opt-in form on your website. Print a QR code for your physical location. Add "Text OFFER to 9999XXXXXX for 20% off" to your packaging and receipts. Grow your list legitimately and your reach compounds over time.
Month 2 — Try your first A/B test: Go to Campaigns → + New Campaign → A/B Test. Create two variants of your next promotional message — same offer, two different phrasings. Send each to 10% of your list (5% each). After 4 hours, TechTo shows which variant has a higher CTR and automatically sends that variant to the remaining 80%. Every A/B test improves your next campaign.
Frequently Asked Questions for First-Time Online SMS Senders
Do I need to install any software to send SMS online? No. TechTo Networks is entirely browser-based. Open Chrome, Safari, Firefox, or Edge on any device — laptop, desktop, tablet, or smartphone — navigate to techtonetworks.com, and you have full access. No downloads, no plugins, no installation.
Can I really send SMS online for free? TechTo Networks gives you 100 free SMS credits on signup — no credit card required. You can send your first 100 messages (or fewer, if any are multi-segment) at no cost. After that, credits are purchased at ₹0.10–0.22 per message depending on type and volume. There are no monthly fees — you pay only for messages you actually send.
How long does a message take to arrive after I click Send? For transactional and OTP messages on TechTo's priority routes, delivery typically happens in 1.5–3 seconds. For promotional campaigns, delivery begins immediately and completes within a few seconds to a few minutes depending on the campaign size (a 100,000-message batch takes longer than a 500-message test).
What if my message does not deliver? Check the campaign report under Reports for the failure reason. "Invalid number" means the phone number does not exist — remove it from future lists. "Carrier blocked" usually means a DLT issue — contact TechTo support. "Pending" means the phone is temporarily unreachable — TechTo retries for up to 48 hours. You are not charged for permanently failed messages.
Can recipients reply to my messages? Yes, if you have a two-way number configured. Go to Settings → Sender IDs → Two-Way Numbers to set up an inbound number. Replies appear in TechTo's shared inbox under Conversations. If you are using a promotional numeric sender ID, inbound replies are not supported — promotional sender IDs are one-way.
Can I send to people outside India? Yes. TechTo Networks supports 180+ countries from the same account. When adding contacts, use the full international format with country code (e.g., +447911123456 for the UK). International rates vary by country and are visible in your dashboard under Settings → Pricing Table.
What is the difference between "sent" and "delivered" in my report? "Sent" means the message left TechTo's servers and was submitted to the carrier. "Delivered" means the carrier confirmed the message reached the recipient's actual handset. A message can be "sent" but not yet "delivered" if the recipient's phone is switched off or out of coverage — in that case, it shows as "Pending" and is retried for up to 48 hours.
What happens if I send a promotional SMS after 9 PM? TRAI regulations prohibit promotional SMS after 9 PM. TechTo's scheduler prevents this for planned campaigns. If a large batch is still dispatching as the clock approaches 9 PM, any messages not yet sent are held and dispatched the next morning at 9 AM automatically.
Do I need DLT registration to send my first test message? For a small test to your own verified numbers, you can send within the sandbox environment or using your free trial credits without full DLT registration. For commercial campaigns to external customer numbers, DLT registration is mandatory. TechTo's onboarding team assists with this — most businesses complete registration within 5–7 business days.
Can I send SMS from my phone to a list of contacts? Through TechTo's mobile browser interface, yes — though the experience is better on a desktop. You can upload a CSV, compose a message, select the list, and schedule or send immediately, all from your phone's browser.
What if I accidentally send the wrong message? For scheduled campaigns that have not yet dispatched, go to Campaigns → [Campaign Name] → Cancel Campaign. For campaigns dispatched immediately — unfortunately, once a message is submitted to carriers, it cannot be recalled. This is why the Test Send step (Step 7) is so important: always test on your own numbers before sending to your full list.
How do I stop a specific customer from receiving my messages? Individual customers can be unsubscribed from your list by going to Contacts → [Contact Name] → Unsubscribe. They will be added to your account's suppression list and excluded from all future campaigns automatically. TechTo also processes opt-outs automatically when a customer replies STOP to any of your messages.
Ready to Send Your First Online SMS?
You now have everything you need to send your first professional SMS campaign from your browser — create your account, upload your contacts, compose your message, review the campaign summary, and click Send. Your 100 free credits are waiting.
The best way to learn online SMS sending is to do it. Start with a test send to your own numbers, see how the delivery report works, and build confidence before your first real campaign.
If you have questions while getting started, TechTo's support team is available 24/7 via chat and email — click the chat icon in the bottom corner of the dashboard anytime.
TechTo Networks — Browser-Based Online SMS for Indian Businesses. No software. No developers. Just login, compose, and send.
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