UltraMailer is a professional desktop application designed for sending high volumes of personalized emails. Version 3.6 sits in a sweet spot for many users—it is mature enough to be stable but lacks the bloatware found in newer versions. Unlike web-based services like Mailchimp or Constant Contact, UltraMailer uses your own SMTP (Simple Mail Transfer Protocol) servers or internet connection to send messages.
The software includes over 300 professional, mobile-responsive templates that have been tested across major email clients like Gmail and Outlook.