Keep event opt-ins from getting lost in Slack
Turn a clear event follow-up into a tidy list update while the conversation is still easy to find.
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
Add Subscriber
Tool to add a new subscriber to a specific list for a specified account.
Why this helps
Event follow-up can pile up quickly, and manually transferring each opt-in makes another opportunity for an omission.
- Move explicit event opt-ins into the intended list promptly.
- Reduce post-event administrative backlog.
- Keep the contact's event context close to the original handoff.
Setup
Build it in a few focused steps.
- 1Connect Slack and Doppler to Notis once in the portal.
- 2Create an automation in the portal or ask Notis in plain language to add event opt-ins to their matching Doppler list.
- 3Describe how the Slack message identifies the event list, contact email, and explicit permission to subscribe.
- 4Select Slack Channel Message Received as the trigger and choose where run reports should go.
- 5Test with one real, consented event opt-in and verify the list.
Questions about this workflow
Can it infer permission from event attendance?
No. Attendance is not enough; the message must make subscription permission explicit.
What if the event list is unclear?
Instruct Notis to skip the addition and report the missing destination.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Doppler marketing automation. A trigger fires from one place; an action lands in another.
Slack triggers
Doppler marketing automation actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add Subscriber
Tool to add a new subscriber to a specific list for a specified account.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Create List
Tool to create a new subscriber list for a specified account. use when you need to segment contacts into a new list.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Delete List
Tool to delete a specific subscriber list by its id. use when permanently removing a list after confirming its no longer needed.
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 Campaigns
Tool to retrieve all campaigns associated with the specified account. use after confirming the accountname to fetch campaigns.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Get List
Tool to retrieve details of a specific subscriber list by its id. use when you need to fetch metadata of an existing list.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get Lists
Tool to retrieve all lists associated with a specified doppler account. use when you need an overview of all mailing lists. example: "retrieve lists for account partnerships@composio.dev"
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Get Removed Subscribers
Tool to retrieve subscribers removed from all lists. use when you need to audit unsubscribes within a date range.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Get Subscriber
Tool to retrieve details of a specific subscriber by their email. use when you need to fetch subscriber information for a given account.
Connect any two apps with Notis in the middle.
Slack and Doppler marketing automation, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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