Bring Slack DMs to WhatsApp—Never Miss a Message
Direct messages in Slack can disappear into unread badges and never resurface. Route them to WhatsApp instead, where you're likelier to see and respond to them.
Trigger
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
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
You respond better to WhatsApp notifications than Slack's volume. DMs in Slack pile up unread because the notification system doesn't match your attention style.
- See DMs in a channel you actually monitor
- Reduce Slack notification fatigue
- Respond in your own time without jumping apps
- Keep async conversations clear and linear
Setup
Build it in a few focused steps.
- 1Connect your Slack and WhatsApp accounts to Notis (one-time setup in the portal).
- 2Create a new automation: pick Notis portal or tell Notis in WhatsApp 'Forward Slack DMs to me on WhatsApp.'
- 3Set the trigger to 'Slack Direct Message Received' (no filters needed).
- 4Choose a WhatsApp number where Notis posts run reports.
- 5Send yourself a test DM in Slack and confirm it arrives on WhatsApp.
Questions about this workflow
Will every Slack DM come through?
Yes. Every direct message (including group DMs if your Slack permissions allow) gets forwarded. You can refine this later by mentioning specific people in your prompt if you want to exclude some.
What if I get too many notifications?
Tell Notis to adjust the automation—e.g., 'Only forward DMs from my team' or 'Only urgent DMs.' Notis interprets plain language.
Do I need to set up filters in Slack?
No. Notis handles all the logic. Just describe what you want in the automation prompt.
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).
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When this happens · Trigger
Do this · Action
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