Let Reactions = Decisions
Important team decisions happen in Slack threads and messages, but no one writes them down. Use a simple reaction (🟢 shipped, 🟡 pending, 🔴 blocked), and Notis logs it to WhatsApp for you.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Send message
Send a text message to a whatsapp number. note: the message will reflect on the recipient's phone number only if they have texted first.
Why this helps
Your team makes decisions in real-time, but there's no single source of truth. You end up with conflicting memories of what was agreed and why.
- Decisions are logged as they're made
- No extra Slack threads needed
- Clear record for future reference
- Reduces rework from miscommunication
Setup
Build it in a few focused steps.
- 1Connect Slack and WhatsApp to Notis.
- 2Create automation: 'When someone reacts with a checkmark in Slack, log that decision on WhatsApp.'
- 3Define which emoji counts as a 'decision' (e.g., 🟢, 🟡, 🔴, or a custom emoji).
- 4Notis captures the message and context, then sends it to WhatsApp as a timestamped log entry.
- 5Review your decisions weekly on WhatsApp or ask Notis to summarize them.
Questions about this workflow
What gets logged—just the emoji or the full message?
The full message plus emoji. Notis captures context so you're not confused later about what was decided.
Can different emoji mean different things?
Yes. Tell Notis: '🟢 means shipped, 🟡 means pending, 🔴 means blocked.' Each gets logged with its meaning.
What if the wrong emoji gets added by accident?
You can tell Notis: 'Ignore accidental emoji' or 'Only log checkmarks from @specific-people.' Customize as you go.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Whatsapp. A trigger fires from one place; an action lands in another.
Slack triggers
Whatsapp actions
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Create message template
Create a new message template for the whatsapp business account. templates must be approved by whatsapp before they can be used. templates are required for marketing messages and messages sent outside the 24-hour window.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Delete message template
Delete a message template from the whatsapp business account. this permanently removes the template and it cannot be recovered. only delete templates that are no longer needed.
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 business profile
Get the business profile information for a whatsapp business phone number. this includes business details like description, address, website, and contact info.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get media
Get information about uploaded media including a temporary download url. the download url is valid for 5 minutes and can be used to retrieve the actual media file. this is useful for downloading media that was sent to your whatsapp number.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Get media info
Get metadata about uploaded media without generating a download url. this is useful for checking file size, type, and hash without downloading the file. use get media if you need the actual download url.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Get message templates
Get all message templates for the whatsapp business account. templates are required for sending messages outside the 24-hour window and for marketing/utility messages.
Reaction Removed Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.
Get phone number
Get details of a specific phone number associated with a whatsapp business account.
New Bot Message Received Trigger
DEPRECATED: use `SLACK_CHANNEL_MESSAGE_RECEIVED` with `is_bot_message=true` instead. Triggered when a new bot message is posted to a Slack channel.
Get phone numbers
Get all phone numbers associated with a whatsapp business account (waba).
Connect any two apps with Notis in the middle.
Not just Slack and Whatsapp. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7 days free trial with 20$ free usage included.
No card. Works with personal or business Whatsapp.