MailButler Allows You to Schedule Emails in Apple Mail Posted 6/03/2016 at 11:20 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Feingeist Software GmbH presents MailButler, the productivity boosting add-on for Apple Mail. MailButler allows its users to schedule an email to be sent at a specific date and time. This functionality helps to fulfill lots of tasks beforehand by writing several emails at once and letting MailButler secure their scheduled delivery later. With its ten various functions, MailButler simplifies, optimizes and streamlines working with emails in Apple Mail in one's daily life.