Brevo (formerly Sendinblue) connects to SMTPPai with a single API key. The important extras are a verified From address and, on some accounts, Authorized IPs.
When to choose Brevo
Choose Brevo if your marketing or transactional stack already lives there and you want WordPress mail on the same API.
Prerequisites
- Brevo account
- Verified sender or domain under Brevo senders
- Ability to create an API v3 key with transactional email permission
Open SMTPPai
- SMTPPai → Dashboard → Add connection
- Click Brevo
Field-by-field setup
Connection name
Example: “Brevo API”.
From name / From email
Verify the address first: Brevo → Senders, Domains & Dedicated IPs. Then enter the same address in SMTPPai.
API key
- Open Brevo → SMTP & API → API keys.
- Create an API v3 key with transactional email permission.
- Copy the key once and paste into SMTPPai’s API key field.
Authorized IPs (if sends fail mysteriously)
If Brevo blocks unknown IPs, open Brevo → Security → Authorized IPs and add your server’s public IP — or relax IP restriction for API access. On local development, add your home/office public IP, not 127.0.0.1.
Credential storage
Database, or define( 'MAILPAI_SMTP_API_KEY', 'your-key' ); in wp-config.php.
Save and test
Save → Test → confirm in Email Log.
Common failures
- Unverified From email
- IP restriction blocking your host
- Using an SMTP key instead of an API v3 key
Related: How connections work