Send and receive your first message

Updated June 2026 5 min read

You're connected — now let's actually send something and get a reply. A simple first run, from your first template to a live two-way chat.

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Quick facts

First message
Must be a template
After they reply
24h of free chat
Where
ChatMitra inbox
Time
A few minutes

To send your first WhatsApp API message, you start a conversation with an approved template (because the customer hasn't messaged you yet). Once they reply, a 24-hour window opens and you can send any message freely. In ChatMitra you pick a template, choose a contact, send, and watch the reply land in your inbox.

In simple language: Your first message starts with a template (the icebreaker), and once they reply, you can chat normally for 24 hours.

Who should read this?

  • New users sending their very first message
  • Anyone unsure why they can't just type freely
  • Owners testing their setup

You’ve connected your number — now let’s send something real. The one rule to remember: you start with a template, and after that it’s a normal chat.

Before you start

Check you have:

  • An approved template (it’s your conversation opener).
  • A contact who opted in to hear from you.
  • Your number live in ChatMitra.

Why a template? Because the customer hasn’t messaged you yet, so WhatsApp requires a pre-approved opener to prevent spam.

Sending your first message

1. Open ChatMitra → Send / Broadcast
2. Pick an approved template
3. Choose your contact (opted-in)
4. Fill in any {{variables}}
5. Send

Example: you send “Hi {{1}}, thanks for signing up with Glow Studio! How can we help?” to a customer who opted in. It lands on their phone in seconds.

Receiving and replying

The moment they reply, a 24-hour window opens. Now you can send anything — text, images, buttons — freely, with no template:

StageWhat you can send
Before they replyApproved template only
After they reply (24h)Any message type
24h+ laterA template, to reopen

Test it on yourself first: send the template to your own number, reply, and watch the chat open in your inbox. If that works, you’re ready for real customers. Next, learn the message types you can use once the window is open.

Keep reading

Related questions people ask

Why can't I just type a message to a customer?

Because they haven't messaged you yet. To start a conversation you must use an approved template. Once they reply, you can send any message freely for 24 hours.

What is the 24-hour window?

When a customer messages you (or replies to your template), a 24-hour window opens during which you can send any message type without a template. After it closes, you start again with a template.

How do I send my first message in ChatMitra?

Pick an approved template, choose a contact who has opted in, and send. Their reply opens the conversation in your inbox.

Key takeaways

  • Your first message to a new contact must be an approved template.
  • Their reply opens a 24-hour window for free messaging.
  • Test on your own number before messaging customers.
  • After 24 hours, a template reopens the conversation.
Published: June 2026 Last reviewed: June 2026 Reviewed by: ChatMitra WhatsApp API Team

Sources: Meta WhatsApp messaging docs

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