Send an email in Brevo when a message is posted in a channel in Slack

What each client fills in

Brevo: From address

For example hello@northside.example

Who it goes to (Brevo)

The address that gets it: yours, or the client’s team.

Slack: Channel ID

The channel’s details → About: the ID at the bottom.

The accounts it needs

Each is the client’s own, stored encrypted and never copied between clients. Until one is added the client’s checklist shows it, and nothing runs.

• 

  In the client’s Slack: api.slack.com/apps → Create New App → OAuth & Permissions → add the chat:write scope (and channels:history, plus groups:history for a private channel, for the message trigger) → Install to Workspace → copy the Bot User OAuth Token. Invite the app to the channel.

• Brevo

  In the client’s Brevo: account menu → SMTP & API → API Keys → Generate a new API key.

After you install it

It lands switched off. The client’s checklist holds exactly this:

1. Connect the client’s Slack, for “A message is posted in a channel”
2. Connect the client’s Brevo, for “Send an email”
3. Fill in Slack: Channel ID (The channel’s details → About: the ID at the bottom)
4. Fill in Brevo: From address (For example hello@northside.example)
5. Fill in Who it goes to (Brevo) (The address that gets it: yours, or the client’s team)