Turn WhatsApp requests into ready-to-send letters
Capture the request where it arrives, prepare the letter with the right context, and send it through Docupost after the recipient and document are confirmed.
Trigger
New Message Received
Triggered in real time when your WhatsApp Business number receives an inbound message from a customer (text, media, location, or contact). Delivered via the Cloud API webhook.
Action
Send Letter
Tool to send a letter via u.s. mail with specified recipient, sender, and pdf. use after confirming recipient and document details. example: send letter(to name='john doe', to address='123 main st, ...', file url='https://...')
Why this helps
A request can get buried in chat while you switch tools to draft, check an address, and prepare a letter.
- Keep letter requests from disappearing in chat
- Reduce copying details between messaging and mailing tools
- Require confirmation of recipient and document before sending
Setup
Build it in a few focused steps.
- 1Connect WhatsApp and Docupost once in the Notis portal.
- 2Create an automation in Notis and describe how to turn a qualifying incoming request into a letter for review and sending.
- 3Pick the WhatsApp New Message Received trigger.
- 4Choose where Notis should send run reports.
- 5Test with one real request and confirm the recipient and document before sending.
Questions about this workflow
Does every WhatsApp message send a letter?
No. In your instruction, tell Notis which incoming requests qualify and require recipient and document confirmation before sending.
Can Notis create the letter PDF automatically?
The listed Docupost action sends a specified PDF. Supply or prepare the document URL and recipient details as part of the workflow.
Can I use this for an existing conversation?
This workflow starts when a new WhatsApp message is received. It does not use a conversation-fetch trigger.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Whatsapp to Docupost. A trigger fires from one place; an action lands in another.
Whatsapp triggers
Docupost actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Send Letter
Tool to send a letter via u.s. mail with specified recipient, sender, and pdf. use after confirming recipient and document details. example: send letter(to name='john doe', to address='123 main st, ...', file url='https://...')
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Send Postcard
Tool to send a postcard via u.s. mail with specified recipient, sender, and front/back images. use after confirming recipient addresses and design urls. example: send postcard(to name='john doe', ..., front image='https://...', back image='https://...')
Message Status Updated
Triggers when a WhatsApp message status changes. IMPORTANT LIMITATION: WhatsApp Cloud API does not provide a native polling endpoint for message status. Status updates are ONLY delivered via webhooks in real-time. This trigger cannot directly poll the WhatsApp API for status updates. This trigger will return empty results as WhatsApp does not support this operation. To track message status updates, you must: 1. Set up a webhook endpoint to receive status notifications from WhatsApp 2. Store the webhook data in your own database 3. Use a different mechanism to query your stored webhook data For more information, see: - https://developers.facebook.com/docs/whatsapp/cloud-api/webhooks
New Message Received
Triggered in real time when your WhatsApp Business number receives an inbound message from a customer (text, media, location, or contact). Delivered via the Cloud API webhook.
Interactive Reply Received
Triggered when a customer taps a quick-reply button or selects an option from an interactive list message you sent.
Message Template Status Update
Triggered when the review status of a WhatsApp message template changes — for example approved, rejected, or flagged — on your WhatsApp Business Account.
Connect any two apps with Notis in the middle.
Whatsapp and Docupost, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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