Setup Brevo Mailer with FluentSMTP

Brevo used to be Sendinblue. The FluentSMTP tile still says Sendinblue in a few places. Same product. The Google-indexed URL for this article stays setting-up-sendinblue-mailer-in-fluent-smtp.

In Brevo

1. Sign in at app.brevo.com.
2. Verify the sender domain (or a sender email).
3. Open SMTP & API → API Keys.
4. Generate a new API key. Copy the v3 key.

In FluentSMTP

Settings → FluentSMTP, pick Brevo / Sendinblue.

• From Email that Brevo has verified.
• API Key.

Leave Store in Database selected. You can tick Disable Encryption, or switch to Store in wp-config.php. Both are optional. See Where secrets are stored.

Save Connection Settings, send a test.