Check event attendee emails in a batch
Submit the attendee list once and let Emailable check the addresses together.
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 Batch Emails
Tool to verify a batch of up to 50,000 email addresses. use when you need bulk deliverability checks for many emails at once.
Why this helps
Event follow-up gets harder when the attendee list needs individual address checks first.
- Prepare a whole attendee list in one batch.
- Reduce repetitive prep before event follow-up.
- Start validation from the channel where the list is already discussed.
Setup
Build it in a few focused steps.
- 1Connect Slack and Emailable to Notis once through the portal.
- 2Create an automation named for attendee-list verification.
- 3In one plain-language prompt, tell Notis to submit an attendee email list shared in Slack for batch verification.
- 4Choose Channel Message Received, choose a channel for run reports, and test with a small real attendee list.
Questions about this workflow
Can I use this for a large list?
Emailable's batch action supports up to 50,000 addresses.
How do I stop an unrelated list from being checked?
Describe the event list in the prompt and ask Notis to act only on messages clearly identified as attendee lists.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Emailable. A trigger fires from one place; an action lands in another.
Slack triggers
Emailable actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Get Account Info
Tool to retrieve account information including owner email and available credits. use when you need to confirm account status before sending email verifications.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Batch Status
Tool to get the status and results of a batch verification job. use after submitting a batch to check its progress.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Initiate OAuth Authorization
Tool to initiate oauth 2.0 authorization code flow. use when you need to obtain an authorization code from emailable. returns the url to redirect the user to.
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 Batch Emails
Tool to verify a batch of up to 50,000 email addresses. use when you need bulk deliverability checks for many emails at once.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Verify Email
Tool to verify a single email address and return detailed results. use when you need to check email deliverability and risk.
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 Emailable, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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