In SMTPPai this provider is labeled Mailchimp Transactional (Mandrill). You connect with the Transactional API key from Mandrill settings.
When to choose Mandrill
Use this option if your transactional sending already runs through Mailchimp Transactional / Mandrill.
Prerequisites
- Mailchimp Transactional (Mandrill) enabled on your Mailchimp account
- Sending domain / from address configured for Mandrill
- API key from Mandrill settings
Open SMTPPai
- SMTPPai → Dashboard → Add connection
- Click Mailchimp Transactional (Mandrill)
Field-by-field setup
Connection name
Example: “Mandrill transactional”.
From name / From email
Must be allowed by your Mandrill sending domain setup.
API key
- Open Mailchimp Transactional → Settings → SMTP & API.
- Create or copy your API key.
- Paste into SMTPPai’s API key field.
Credential storage
Database or MAILPAI_SMTP_API_KEY in wp-config.php.
Save and test
Save → Test → Email Log. Check Mandrill outbound activity if the message is accepted but not delivered.
Common failures
- Using a Marketing API key instead of Transactional / Mandrill key
- From domain not configured for Mandrill
Related: How connections work