Send an email in Brevo when someone joins the mailing list in Mailchimp

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.

Mailchimp: Audience ID

Audience → Settings → Audience name and defaults: the Audience ID.

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 Mailchimp: Profile → Extras → API keys → Create A Key. The server prefix is the part after the dash (us21).

• 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 Mailchimp, for “Someone joins the mailing list”
2. Connect the client’s Brevo, for “Send an email”
3. Fill in Mailchimp: Audience ID (Audience → Settings → Audience name and defaults: the Audience ID)
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)