使用醒目的主题行提高电子邮件的打开率。 我今天过得不错，你呢？ Not just a pretty interface "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia We’re very font of you because you’re our type. One Mississippi, two Mississippi… 开启无限创新之门… 尝试不同的电子邮件主题行样式，找出打开率最高的样式。