> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unify.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# WhatsApp

> Message and call your assistant on WhatsApp

WhatsApp is one of the richest ways to talk to your assistant: text, photos,
documents, emoji reactions, and even voice calls, all from the app you already
have on your phone.

## Setup

<Steps>
  <Step title="Verify your WhatsApp number">
    Under **Account → Contact Info**, add your WhatsApp number. You'll receive
    a 6-digit verification code to confirm it's yours.
  </Step>

  <Step title="Create the WhatsApp contact">
    In your assistant's **Contact Details**, create a WhatsApp contact. Your
    assistant appears as a WhatsApp business contact you can message.
  </Step>

  <Step title="Send the first message">
    Message your assistant first. This opens the conversation — and it's also
    what allows your assistant to call you on WhatsApp later.
  </Step>
</Steps>

<Note>
  WhatsApp contacts have a one-time setup cost and a monthly fee, paid in
  credits — the amounts are shown before you confirm.
</Note>

## Messaging

* **Text** — full two-way conversation, same memory as every other channel.
* **Media** — send photos, screenshots, and documents; your assistant reads
  them and can send files back.
* **Reactions** — react to your assistant's messages with emoji; it notices.

### The 24-hour window

WhatsApp has a platform-wide rule for business messaging: once you message
your assistant, it can reply freely for 24 hours. If more than a day passes
without a message from you, your assistant can only send a short, pre-approved
greeting — something like "I have a message for you" — until you reply, which
reopens the window.

So if you get a brief nudge from your assistant instead of the full message,
just reply — the real message follows immediately.

## WhatsApp voice calls

Your assistant can talk to you on WhatsApp calls, not just in text:

* **You call it** — call your assistant in WhatsApp like any contact, and it
  answers in its voice.
* **It calls you** — WhatsApp requires your permission before a business can
  call you. The first time, your assistant sends a call-permission request in
  the chat; accept it, and from then on it can ring you on WhatsApp.

Calls work just like [phone calls](/communication/phone-calls): natural voice,
interruptions welcome, recordings and transcripts kept.

<Tip>
  WhatsApp is ideal when you're away from your desk — snap a photo of a
  document, a whiteboard, or a receipt and send it straight to your assistant
  with a one-line instruction.
</Tip>