Send a donor acknowledgment letter
Acknowledge generosity with reliable, thoughtful follow-through.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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
Donation updates are acknowledged in chat but formal letters remain manual.
- Improves acknowledgment consistency
- Uses a clear approval signal
- Reduces administrative backlog
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Docupost once in Notis.
- 2Create an automation named Reaction donation letter.
- 3Tell Notis to act on the chosen reaction for donation updates, confirm donor details and the PDF, and send the letter.
- 4Pick Message Reaction Added as the trigger.
- 5Choose where reports go and test with one donation message.
Questions about this workflow
Can I filter by a donation channel?
Yes. Use the optional channel filter on the reaction trigger.
Does this support donor review before mailing?
Yes. Ask Notis to request confirmation for every letter or only uncertain cases.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slackbot to Docupost. A trigger fires from one place; an action lands in another.
Slackbot 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://...')
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slackbot and Docupost, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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No card. Works with personal or business Docupost.