Turn a WhatsApp approval into a mailed letter
A clear customer reply can move a prepared letter forward. Have Notis act on the interactive response and send only when the recipient and PDF are confirmed.
Trigger
Interactive Reply Received
Triggered when a customer taps a quick-reply button or selects an option from an interactive list message you sent.
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
Approval replies can be separated from the document and address needed to complete the mailing.
- Use a clear reply as a letter workflow signal
- Keep prepared documents tied to the conversation
- Require verified mailing details before sending
Setup
Build it in a few focused steps.
- 1Connect WhatsApp and Docupost once in the Notis portal.
- 2Create an automation and describe which interactive reply means the letter is approved and what details must be confirmed.
- 3Pick the WhatsApp Interactive Reply Received trigger.
- 4Choose where Notis should send run reports.
- 5Test using one real interactive reply and verify the recipient and PDF before sending.
Questions about this workflow
Does this trigger run for ordinary text replies?
No. It runs when a customer taps a quick-reply button or selects an option from an interactive list message.
Does the trigger itself confirm the mailing address?
No. Confirm that the recipient details are available and accurate before the Docupost letter is sent.
What does Docupost need to send the letter?
The listed action requires the recipient, sender, and a PDF URL. Your prompt should require confirmation of those details.
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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