使用醒目的主题行提高电子邮件的打开率。 "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia 尝试不同的电子邮件主题行样式，找出打开率最高的样式。 正在生成诙谐的文字… "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula 密切关注电子邮件的打开率，以分析和改善效果！ Fighting off robots… 不要忘记在电子邮件中添加有趣、相关的号召性用语按钮。