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http://www.yesware.com/ http://www.yesware.com/ is free to use and also works with the 1x1 image to track opens. You can also add trackable links.
by toddrew 14y ago
http://www.yesware.com/ http://www.yesware.com/ is free to use and also works with the 1x1 image to track opens. You can also add trackable links.