Gammadyne Mailer is a complete solution for running email campaigns. It can send an unlimited number of personalized messages, as well as process virtually any type of incoming email, including sign-ups, opt-outs, and bounce-backs. The mailing list can be in a database, text file, or CSV file, and there are a full set of tools for adding, changing, and removing members. The internal SMTP engine supports multi-tasking, load balancing, HTML, recipient filtering, throttling, and much more. Other capabilities include tracking, auto-responding, forwarding, list-serving, and follow-ups. But perhaps Gammadyne Mailer's best quality is its rock-solid design; it can run indefinitely without crashing or draining system resources.