Validate a Slack contact with a reaction
Use one agreed reaction as a lightweight cue to check an address, without adding another checklist 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
Email Validation
Tool to validate whether an email address is real and deliverable. use after collecting an email address to confirm deliverability.
Why this helps
A team member spots an email that needs checking but forgets to come back to it after the conversation moves on.
- Turn a visible reaction into a clear request for an email check.
- Avoid adding a separate reminder for the same address.
- Keep the result connected to the team conversation.
Setup
Build it in a few focused steps.
- 1Connect Slack and Abstract to Notis once in the portal.
- 2Create an automation in the portal, or ask Notis to validate an email when you add your agreed reaction to a Slack message.
- 3Use one instruction: when the selected reaction is added, find the email in that message, validate it with Abstract, and report the result.
- 4Choose the Slack reaction-added trigger and a channel for run reports.
- 5Test by reacting to one message that contains a real email.
Questions about this workflow
Does the reaction itself contain the email address?
No. The instruction asks Notis to use the message the reaction was added to.
Can I select a reaction filter?
The event supports optional emoji filtering; describe your intended cue when setting up the trigger.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Abstract. A trigger fires from one place; an action lands in another.
Slack triggers
Abstract actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Validate IBAN
Tool to validate the format and country code of an iban number. use after collecting an iban to ensure it is correctly formatted.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Email reputation
Tool to enrich an email address with reputation and risk scoring data. use when you need to assess an address's deliverability and risk before outreach. use after confirming your api key is valid.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Email Validation
Tool to validate whether an email address is real and deliverable. use after collecting an email address to confirm deliverability.
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.
Slack and Abstract, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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