Send a Docupost letter from an HTTP request
Use an incoming webhook to start a letter task wherever a request originates, then confirm the mailing details before sending.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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
Letter requests submitted through other tools can require manual transfer into your mailing process.
- Accept letter requests from webhook-enabled tools
- Keep the mailing process in one instruction-driven workflow
- Check required recipient and PDF details before dispatch
Setup
Build it in a few focused steps.
- 1Connect Docupost once in the Notis portal.
- 2Create an automation and describe how an incoming HTTP request should become a confirmed letter send.
- 3Pick the Notis webhook trigger.
- 4Choose where Notis should send run reports.
- 5Test with one real request and verify the recipient, sender, and PDF URL.
Questions about this workflow
What starts this automation?
An HTTP request starts the Notis webhook trigger. The sending system must make that request.
Does Notis provide a form for letter requests?
The trigger is an HTTP request. Use a system that can send the request with the needed details.
What must be ready before mailing?
The Docupost action requires the recipient, sender, and PDF URL. Confirm those details before sending.
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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