Look up mail servers for a Slack domain
When a domain comes up in a technical or onboarding discussion, ask Clearout for its MX records to support the next investigation step.
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
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).
Why this helps
A mail-routing question can turn into a chain of manual lookups that pulls attention away from the original task.
- Retrieve mail server records from a shared domain.
- Keep a technical lookup linked to the conversation.
- Give the team concrete data for a routing investigation.
Setup
Build it in a few focused steps.
- 1Connect Slack and Clearout to Notis once in the portal.
- 2Create an automation through Automations or ask Notis conversationally.
- 3Tell Notis in one instruction to retrieve Clearout MX records for domains shared in the relevant Slack channel and summarize them.
- 4Select Channel Message Received, choose a run-report channel, and test with one real domain.
Questions about this workflow
Does an MX lookup verify a mailbox?
No. It retrieves mail server records for a domain; it does not validate a specific email address.
Can it help with email routing investigations?
Yes. The returned MX records provide domain mail-server information for that investigation.
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.
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.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Business Account Verify
Tool to check if an email belongs to a business/work account. Use when validating corporate emails before onboarding.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Catch-All Verify
Tool to check if an email domain is catch-all. Use after confirming email validity.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Verify Disposable Email
Tool to check if an email is from a disposable provider. Use after acquiring an email address.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
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).
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Fetch Domain WHOIS Information
Tool to fetch WHOIS record for a domain. Use when you need WHOIS data for a domain.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
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.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
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.
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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