curl -X POST "https://mail.example.com/api/v1/add/mailbox" -H "X-API-Key: $MAILCOW_API_KEY" -H "Content-Type: application/json" -d '{"local_part":"jane","domain":"example.com","password":"S3curePass!2026","quota":"10240","active":"1"}'

Category: Mail Servers & Postfix

curl -X POST "https://mail.example.com/api/v1/add/mailbox" -H "X-API-Key: $MAILCOW_API_KEY" -H "Content-Type: application/json" -d '{"local_part":"jane","domain":"example.com","password":"S3curePass!2026","quota":"10240","active":"1"}'

Create a mailbox through the Mailcow API

This POST creates the mailbox jane@example.com with the given password and 10 GB quota in one call. The response includes the new mailbox's details or an error message. Set the domain's default values first so the mailbox inherits sensible limits.
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