Send a template email in Postmark when a contact joins a list in Brevo

What each client fills in

Postmark: From address

For example hello@northside.example

Postmark: Template alias

Postmark → Templates → the template: its alias.

Brevo: List ID

Contacts → Lists: the number beside the list’s name.

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.

• Brevo

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

• 

  Postmark → the client’s server → API Tokens → copy the Server API token. The From address must be a confirmed sender signature or on a verified domain.

After you install it

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

1. Connect the client’s Brevo, for “A contact joins a list”
2. Connect the client’s Postmark, for “Send a template email”
3. Fill in Brevo: List ID (Contacts → Lists: the number beside the list’s name)
4. Fill in Postmark: From address (For example hello@northside.example)
5. Fill in Postmark: Template alias (Postmark → Templates → the template: its alias)