Or try sending each variation of the test to only a portion of your list over a defined period of time and then send the best-performing version to the rest of your list afterwards.

https://pxu.instructure.com/eportfolios/608/Gp_Mast_100_Mg_Lozenges
https://britishcounciluk.instructure.com/eportfolios/3069/Fermaprovi_5_Mg_Korean
https://westmont.instructure.com/eportfolios/820/Glifor_1000_Mg_Sodium


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