Keep community update opt-ins organized
Use a simple signal to make explicit community email requests easier to follow through on.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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
Community requests can become difficult to track when the channel is active and follow-up is manual.
- Connects a deliberate reaction to an opt-in review.
- Helps keep community follow-up organized.
- Requires explicit consent and a verified address before insertion.
Setup
Build it in a few focused steps.
- 1Connect Slack and Enginemailer to Notis once in the portal.
- 2Create the automation in the portal or ask Notis to build it conversationally.
- 3Write one instruction specifying the opt-in reaction and requiring an explicit request and verified address before adding anyone to the community updates list.
- 4Choose the Slack reaction-added trigger, select a channel for run reports, and test on one genuine opt-in message.
Questions about this workflow
Is a reaction by itself enough to add someone?
The instruction should require a clear request for email updates and a verified address.
Can the signal be limited to a particular message?
Describe the designated opt-in message and reaction in the automation instruction.
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
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