Prepare a cleaner list for event follow-up
Catch address issues while attendee details are being collected, before they turn into a cleanup task after the event.
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
Verify Email
Tool to verify a single email address in real time. use when you need to confirm deliverability before e.g. user signup.
Why this helps
Event follow-up often lands after a busy day, when fixing a list of bad addresses is especially easy to postpone.
- Find address issues before follow-up messages are drafted.
- Keep list hygiene connected to event coordination.
- Avoid a separate batch of manual checks later.
Setup
Build it in a few focused steps.
- 1Connect Slack and Emaillistverify to Notis once in the portal.
- 2Create an automation in the portal or ask Notis to set it up conversationally.
- 3Write one instruction asking Notis to verify attendee emails posted in the event-planning channel.
- 4Select Channel Message Received and choose a channel for run reports.
- 5Test with one real attendee address shared by the team.
Questions about this workflow
Does this send event follow-up?
No. It checks a single email address and can report the validation result.
Can the prompt narrow it to event messages?
Yes. Describe the event context in the plain-language instruction.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Emaillistverify. A trigger fires from one place; an action lands in another.
Slack triggers
Emaillistverify actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Verify Email
Tool to verify a single email address in real time. use when you need to confirm deliverability before e.g. user signup.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Verify Email Detailed
Tool to verify a single email address and return detailed validation information. use when you need deep validation insights beyond a simple status.
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.
Slack and Emaillistverify, 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 Emaillistverify.