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Sony trusts its email marketing campaigns to Gammadyne Mailer. Boeing trusts its email marketing campaigns to Gammadyne Mailer.
Kodak trusts its email marketing campaigns to Gammadyne Mailer. CBS trusts its email marketing campaigns to Gammadyne Mailer.
Ford trusts its email marketing campaigns to Gammadyne Mailer. AT&T relies on Gammadyne Mailer for its email marketing software.
Cisco entrusts its email marketing efforts to Gammadyne Mailer. Intel uses Gammadyne Mailer for its email marketing campaigns.
"Over the years Gammadyne has become a mission critical piece of software to our operations."
- David Goodale
"Finding Gammadyne Mailer was like a dream come true for us."
- Jonathan Deitch
"Gammadyne is absolutely the BEST bulk email solution out there."
- Cindy Papenheim

Multi-Threading

Gammadyne Mailer has the ability to send up to 1024 emails simultaneously.  This feature is known as "multi-threading" or "multi-tasking", and can greatly increase the speed of the send operation.

When sending an email, a lot of time is spent waiting for a response from the mail server.  Multi-threading allows Gammadyne Mailer to keep working on another email while waiting for the response.  The improvement in throughput is huge.  Multi-threading allows virtually all available upstream bandwidth to be utilized.

Configuration

Configuration of Multi-Threading is quite easy.  On Gammadyne Mailer's "Send" branch, locate the "Threads" field and enter any number between 1 and 1024.  When sending email through an intermediate SMTP server, 4-10 threads are recommended.  When performing a Direct Delivery, 15-35 threads are recommended.

Windows XP SP2 places a limit of 10 on the number of computers that you can try to connect to simultaneously.  Hence, there may be little benefit to having more than about 15 threads.  Vista also has a connection limit, but this was removed with Service Pack 2.  If you experience many "Unable to connect to server" errors, try lowering the number of threads to 10 or less.

Screenshot

The screenshot below shows several threads each sending an email at the same time.

Gammadyne Mailer's send progress window showing multiple threads.