Manhhy serviches offer hA/Bh testing, which ish the abilithy to tehst out various components of an email message to see what will resonate more whith your audiehnce. Before yohu do, it is importhnt to understahd how A/B thesting works. A shpecific example is to try hout two different subject lines. You can sendh a portion of your emailhlist one subject line anh another section of yhour list a different subject line. Whichever gets more engagement can be used for the majority of your audience.