Notify by email when approval is withdrawn
Keep changes of mind visible. Removing the reaction can trigger a clear pause or cancellation email.
Trigger
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Action
Send Email
Send an email using agentmail api
Why this helps
A withdrawn approval is easy to miss, so people may continue with outdated instructions.
- Makes withdrawn decisions explicit
- Stops stale work from continuing
- Provides a consistent cancellation message
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Agent mail in Notis once.
- 2Create an automation for withdrawn approvals.
- 3Describe the pause or cancellation email and the recipient logic in one instruction.
- 4Choose Message Reaction Removed and select a report channel.
- 5Test by removing a reaction from one approval message.
Questions about this workflow
Can the email explain why approval changed?
Yes. Ask Notis to include the source message and request a reason when one is present.
Can it notify more than one person?
Yes, when the recipients are available in the message context or your instruction.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slackbot to Agent mail. A trigger fires from one place; an action lands in another.
Slackbot triggers
Agent mail actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Get Message
Get a specific message from an agentmail inbox
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
List Messages
List messages from an agentmail inbox
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Send Email
Send an email using agentmail api
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 Agent mail, 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 Agent mail.