Many tools have built in A B testing functionality that allow you to test everything from subject lines to images to body content.

http://appraisalinstitute.instructure.com/eportfolios/552/Kamagra_Chewable_100_Mg_Reviews
http://dps.instructure.com/eportfolios/116190/Igf1_Des_1_Mg_Walmart
http://lccschool.instructure.com/eportfolios/472/Amoxicillin_500_Mg_Diarrhea


縺ゅ縺
メッセージ