Prerequisites
- Active Mailchimp account with Standard or Premium plan
- Mandrill (Transactional Email) add-on enabled
- Verified sending domain
Required Credentials
- API Key
How to Get Your API Key:
- Log in to your Mailchimp account
- Navigate to Account & Billing → Extras → Transactional Email
- Click Launch App to access Mandrill
- Go to Settings → SMTP & API Info
- Click + New API Key
- Provide a description and copy the generated key