Mail a contract packet after Slack approval
Convert a clear approval signal into the next physical step.
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
Approved documents stall while someone remembers to prepare and mail them.
- Uses an explicit approval signal
- Reduces post-approval delay
- Keeps document handling auditable
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Docupost once in Notis.
- 2Create an automation named Reaction approved contract letter.
- 3Tell Notis to act on the specified reaction, identify the approved PDF and confirmed mailing details, and send only after confirmation.
- 4Pick Message Reaction Added as the trigger.
- 5Select a report channel and test with one approved message.
Questions about this workflow
Can I use a particular emoji?
Yes. The Slack reaction trigger supports optional emoji filtering.
What happens if the PDF is not available?
Notis reports the missing file or URL instead of sending an incomplete letter.
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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