Capture Slack event opt-ins in Enginemailer
Keep event follow-up moving by adding only people who clearly asked for email updates.
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
Insert Subscriber
Tool to add a new subscriber with optional custom fields. use when registering a user to a specific mailing list after verifying their email.
Why this helps
Event interest and opt-in details can get buried in fast-moving Slack conversations, leaving follow-up to memory.
- Collects expressed opt-ins in the flow of event planning.
- Reduces repetitive list entry after a busy event.
- Keeps the consent requirement explicit in the instruction.
Setup
Build it in a few focused steps.
- 1Connect Slack and Enginemailer to Notis once in the portal.
- 2Create an automation in the portal or ask Notis to create it in plain language.
- 3In one instruction, tell Notis to add a person to the chosen list only when a Slack message clearly includes their email and request for event updates; ask it to verify the address first.
- 4Choose the Slack channel-message trigger, select a channel for run reports, and test with one real opt-in.
Questions about this workflow
Will every email mentioned in the channel be added?
The instruction should require a clear request for email updates and verification before adding anyone.
Can I control where Notis reports a run?
Yes. Choose the channel for run reports when creating the automation.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Enginemailer. A trigger fires from one place; an action lands in another.
Slack triggers
Enginemailer actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Check Export Status V2
Tool to check status of a previously requested csv report export. use after initiating an export to poll for completion.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Create Campaign
Tool to create a new email campaign. use when you need to configure and schedule a campaign before sending.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Export CSV Report V2
Tool to export a transactional email report as csv. use when you need to initiate an export within a specific date range (max past 60 days).
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Get Subcategories
Tool to retrieve subcategories for a given category. use when you need to list or choose subcategories after selecting a category.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Insert Subscriber
Tool to add a new subscriber with optional custom fields. use when registering a user to a specific mailing list after verifying their email.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
List Campaign
Tool to retrieve a list of undelivered campaigns. use when you need to fetch campaigns awaiting delivery.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Pause Campaign
Tool to pause a scheduled email campaign. use when you need to halt a campaign before sending to apply updates or adjust schedule.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Send Campaign
Tool to send an email campaign immediately. use when the campaign exists, has at least one recipient, and is not scheduled or already delivered. e.g., 'send campaign 123 now'.
Connect any two apps with Notis in the middle.
Slack and Enginemailer, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Enginemailer.