Validate event registration emails from Slack
Check attendee contact details while the event plan is open, before reminders and logistics depend on them.
Trigger
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
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
Event logistics are prepared around registration details, but an address check is left until the last minute.
- Catch address issues before attendee communication is prepared.
- Keep the validation result alongside event planning context.
- Reduce last-minute rework caused by an address that cannot receive updates.
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 attendee emails shared in Slack event planning.
- 3Use one instruction: when a channel message shares an attendee email for event logistics, validate it with Abstract and report the result without sending a message.
- 4Select the Slack channel message trigger and your run-report channel.
- 5Test with one real attendee address.
Questions about this workflow
Will it send event reminders?
No. It validates addresses and reports results only.
Can it focus on event-related messages?
Yes. Mention event logistics or attendee context in the plain-language instruction.
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.
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Webhook trigger
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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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