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Notis

Verify an email after a Slack approval reaction

Mark a message with your agreed reaction when an address is ready to check, and let Clearout return a verification result.

Trigger

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

Action

Instant Email Verifier

Tool to instantly verify a single email address. Use when you need real-time validation before processing an email.

Why this helps

Address checks can get buried among reactions and replies when approval and validation happen in separate steps.

  • Use a familiar reaction as a clear check request.
  • Keep validation tied to the approved message.
  • Reduce the chance an approved address is never checked.

Setup

Build it in a few focused steps.

  • 1Connect Slack and Clearout to Notis once in the portal.
  • 2Create an automation in the portal or ask Notis in plain language.
  • 3Tell Notis in one instruction to verify an email in the reacted-to message with Clearout and report the result.
  • 4Select Message Reaction Added and the agreed channel and emoji, choose a report channel, then test by reacting to one real message.

Questions about this workflow

Can a reaction trigger run on a particular emoji?

The trigger supports optional filtering by channel and emoji name. Choose the agreed reaction when setting it up.

What if the message has no email?

Include in the instruction that Notis should act only when the reacted-to message contains an email address.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Slack to Clearout. A trigger fires from one place; an action lands in another.

Slack triggers

Clearout actions

Recurring trigger

Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.

TriggerScheduled

Autocomplete Company to Domain

Tool to autocomplete company names to probable domains with confidence scores. Use after obtaining a company name or URL to get suggestions.

ActionInstant

Webhook trigger

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

TriggerInstant

Business Account Verify

Tool to check if an email belongs to a business/work account. Use when validating corporate emails before onboarding.

ActionInstant

New Channel Created Trigger

Triggered when a new channel is created in Slack.

TriggerInstant

Catch-All Verify

Tool to check if an email domain is catch-all. Use after confirming email validity.

ActionInstant

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

TriggerInstant

Verify Disposable Email

Tool to check if an email is from a disposable provider. Use after acquiring an email address.

ActionInstant

Direct Message Received

Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.

TriggerInstant

Find Domain MX Records

Tool to retrieve MX records for a domain in priority order. Use when you need to find a domain's mail servers (e.g., for email routing setup).

ActionInstant

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Fetch Domain WHOIS Information

Tool to fetch WHOIS record for a domain. Use when you need WHOIS data for a domain.

ActionInstant

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Bulk Email Finder

Tool to upload a CSV or XLSX contacts file for bulk email finding. Use when you need to find emails for a list of contacts in bulk.

ActionInstant

Reaction Added Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.

TriggerInstant

Cancel Bulk Email Finder Job

Tool to cancel a running bulk email finder job. Use when you need to stop an in-progress list scan before completion.

ActionInstant

Connect any two apps with Notis in the middle.

Slack and Clearout, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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