Send a follow-up letter from a Notis webhook
Let your own systems hand off high-value follow-up without another manual queue.
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
Important external events arrive without a reliable owner for physical follow-up.
- Connect custom event sources to physical mail
- Keep a confirmation gate before sending
- Centralize run reports in Notis
Setup
Build it in a few focused steps.
- 1Connect Trello and Docupost once in the Notis portal if Trello context is part of the payload.
- 2Create a new automation and describe the webhook outcome.
- 3Tell Notis to use the webhook data to prepare and send a Docupost letter after confirming the recipient, sender, and PDF URL.
- 4Pick a Notis webhook trigger.
- 5Choose a report channel, then test with one real webhook payload.
Questions about this workflow
Does a webhook replace Trello?
It can start the automation from another system; include any Trello details you want Notis to use in the payload.
Will the letter send immediately?
Only if your instruction permits it. You can require confirmation of all recipient and document details.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Trello to Docupost. A trigger fires from one place; an action lands in another.
Trello 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://...')
Card Archived Trigger
Triggered when a card is archived in the specified board
New Activity Trigger
Triggered when there is activity in Trello.
New Board Trigger
Triggered when a board is created in the specified workspace
New Card Trigger
Triggered when a card is created in the specified board
Card Updated Trigger
Triggered when a specific card is updated
Connect any two apps with Notis in the middle.
Trello and Docupost, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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