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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

Throttling

Gammadyne Mailer has the ability to throttle (limit) the rate that emails are sent.  Because some servers reject emails when too many arrive too fast, this increases the number of emails that are successfully delivered, thereby improving the overall response rate to your email campaign.  It also reduces the chance of your mail server becoming blacklisted.  Once blacklisted, your delivery success rate will be dramatically reduced.  For these two reasons, it is very important to use Gammadyne Mailer's throttling capabilities.

Following are the various methods that can be used.  You may use multiple methods if you like - Gammadyne Mailer will make sure that all throttles are satisfied before sending an email.

Method #1: The Universal Domain Throttle

This feature will ensure that no individual mail server will receive too many messages too fast.  Every domain that you send email to will have its own separate and independent throttle.  For example, Gmail, Yahoo, and Hotmail will all have their own throttles.  An email sent to one of these domains will not slow down the delivery rate to the others.  This is the preferred method of throttling because it achieves the highest success rate with the least impact on the delivery speed.

To configure it, go to the Send/Throttles branch and check the "Universal Domain Throttle" box.  By default, this feature is configured to send 1 email every 12 seconds.  We recommend you stick with this default.

Gammadyne Mailer's Universal Domain Throttle.

Method #2: The Individual Domain Throttles

It is possible to create a throttle for one or more target domains.  Go to the Send/Throttles branch, and click the "Add" button at the bottom of the table.  In the Domain column, enter the domain name that you wish to throttle the delivery rate to (e.g. "gmail.com").  In the Throttle Count column, enter the maximum number of emails that should be sent during the Throttle Period.  In the Throttle Period column, enter the number of seconds over which no more than Throttle Count emails will be sent to the domain.

It is generally better and easier to use the Universal Domain Throttle.  There is no way to know the optimal delivery rate for every domain on the Internet.  If there is a particular domain that you are having trouble with, you can use this table to give it a more restrictive throttle.  Any domain listed in the table will take precedence over the Universal Domain Throttle, so it is perfectly okay to use both.

Gammadyne Mailer's Individual Domain Throttles.

Method #3: Relay Throttles

It is possible to throttle the delivery rate to one or more relaying SMTP servers.  This is useful for reducing the load on your mail server.  It is especially important if the SMTP server imposes a limit.

To configure a relay throttle, go to the Servers/SMTP branch and check the "Use Project SMTP Settings" box.  For each relaying mail server, click the "Add" button at the bottom of the table.  Fill in the Server Name, Port, Authentication, User Name, and Password columns with the correct settings.  In the Throttle Count column, enter the maximum number of emails that should be sent during the Throttle Period.  In the Throttle Period column, enter the number of seconds over which no more than Throttle Count emails will be sent to the domain.

For example, if you are relaying emails through Gmail, you are only allowed to send 100 per day.  The Throttle Count column should be "100".  The Throttle Period column should be "86400".

Gammadyne Mailer's Relay Throttles.

Method #4: Pulsing

It is possible to automatically pause the campaign after sending a certain number of emails.  Go to the Send/Throttles branch and check the "Pulse" box.  Enter the number of messages that should be sent, and how long the pause should be (in seconds).  For example, if you enter "50" in the Messages field and "5" in the Pause field, the Send Operation will pause for 5 seconds between each batch of 50 emails.

This method is primitive and in all respects inferior to the Universal Domain Throttle.

Gammadyne Mailer's Pulse Throttle.