Mailjet is one of the few API providers in SMTPPai that needs two secrets: an API key and a Secret key.
When to choose Mailjet
Use Mailjet when your sending domains and contacts already live in Mailjet and you want WordPress transactional mail on the same account.
Prerequisites
- Mailjet account
- Verified sender domain
- API key pair from Account → API keys
Open SMTPPai
- SMTPPai → Dashboard → Add connection
- Click Mailjet
Field-by-field setup
Connection name
Example: “Mailjet transactional”.
From name / From email
Must be on a verified domain: Mailjet → Sender domains & addresses.
API key and Secret key
- Open Mailjet → Account → API keys.
- Copy the API key into SMTPPai’s API key field.
- Copy the Secret key into SMTPPai’s Secret key field.
Credential storage
- Database (both secrets encrypted), or
- wp-config:
define( 'MAILPAI_SMTP_API_KEY', 'your-api-key' ); define( 'MAILPAI_SMTP_API_SECRET', 'your-secret-key' );
Save and test
Save → Test → Email Log.
Common failures
- API key and Secret key swapped
- From address not on a verified sender domain
Related: How connections work
