Use a reaction as a payment verification handoff
Keep the payment check connected to the message your team marked for attention.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Receive Ko-fi payment webhook
Receives and validates Ko-fi payment webhook events. Use this to process real-time notifications for donations, subscriptions, commissions, and shop orders from Ko-fi. The webhook includes payment details, supporter information, and transaction metadata. Returns validated payment data to confirm receipt (Ko-fi expects 200 OK to prevent retries).
Why this helps
Founders may repeatedly revisit the same payment note because its status is unclear.
- Provide a visible signal that a payment item is ready for intake.
- Reduce repeated checks on the same conversation.
- Keep verification tied to team context.
Setup
Build it in a few focused steps.
- 1Connect Slack and Ko-fi to Notis once through the portal.
- 2Create an automation via the portal or ask Notis in plain language.
- 3Write one instruction explaining how the chosen reaction on a payment note should cue Ko-fi webhook receipt and validation.
- 4Select the reaction added trigger and choose a channel for reports.
- 5Test with one real payment note and reaction.
Questions about this workflow
Does a reaction prove the payment was verified?
No. The reaction starts the workflow; Ko-fi webhook data is what the action validates.
Can the trigger listen for a specific emoji?
The reaction trigger can optionally filter by emoji name.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Ko fi. A trigger fires from one place; an action lands in another.
Slack triggers
Ko fi actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Receive Ko-fi payment webhook
Receives and validates Ko-fi payment webhook events. Use this to process real-time notifications for donations, subscriptions, commissions, and shop orders from Ko-fi. The webhook includes payment details, supporter information, and transaction metadata. Returns validated payment data to confirm receipt (Ko-fi expects 200 OK to prevent retries).
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
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 Ko fi, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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No card. Works with personal or business Ko fi.