Approve a subscriber handoff with a reaction
Mark an eligible contact once in Slack and let Notis take care of the list update.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Add Subscriber
Tool to add a new subscriber to a specific list for a specified account.
Why this helps
A contact may be ready to add, but the person responsible gets pulled into other work before finishing the handoff.
- Make the approval signal visible in the conversation.
- Avoid repeated reminders to complete a small list update.
- Keep consent and contact details as conditions for action.
Setup
Build it in a few focused steps.
- 1Connect Slack and Doppler to Notis once in the portal.
- 2Create the automation in the portal or ask Notis conversationally to add approved contacts to a Doppler list.
- 3Tell Notis which reaction means approval and to proceed only when the message has an email and explicit consent.
- 4Select Message Reaction Added as the trigger and choose a channel for run reports.
- 5Test by reacting to one message with an eligible contact.
Questions about this workflow
Can any reaction trigger the update?
Specify a single approval reaction in the plain-language instruction and test it with a real example.
Does the reaction provide subscriber consent?
No. The message must separately state permission to subscribe; a reaction alone is not consent.
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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