Version 5.7 included several targeted updates to enhance reliability and workflow: What's New in Direct Mail 5.7.2

: For larger mailing lists, the service offers an Unlimited Plan (starting at $20/month based on contact volume) or a Pay Per Email Plan for flexibility.

: Version 5.7 introduced advanced capabilities for organizations, including support for Single Sign-On (SSO) , Microsoft Exchange, and G Suite integration. Key Features of Version 5.7