Wondering if you should upgrade to the next version of PowerMTA? Here’s a brief overview of the key features in the recent major releases.

4.5r7 4.5r19 5.0r1
Per Source IP Rate Limits for Connections and Message Rates
Opportunistic TLS
Per Recipient Delivery Schedules
Web Monitor ENHANCED
MX Rollup for Outlook Domains
GDPR Privacy Assistance
Support for non-ASCII UTF-8 Addresses
mTLS Support
Enhanced User Guide
SparkPost Signals Support
Custom Bounce and FBL Processing
PMTA Test Config
Spool Priority
MXRollup and Cold vMTA Alignment
Email Submission via HTTP
JSON-Formatted Outputs
HTTP Delivery Webhooks
Opportunistic DANE