The best part is that it’s pretty simple let me illustrate by taking Spark and Gmail as an example. Since the default iOS Mail app does not have the feature, we will have to rely on third-party mail apps such as Spark, Gmail, Microsoft Outlook, Newton Mail, etc. How to schedule emails on iPhone to send later Schedule email with Calendar app on macOS.How to schedule emails on Mac to send later.Schedule emails in Gmail for iPhone and iPad.Schedule emails on iPhone or iPad via Spark.How to schedule emails on iPhone to send later.And though the default iOS and macOS Mail app doesn’t support such a feature, there are tricks and hacks to schedule emails on iPhone, iPad, and Mac. A handy trick is to schedule them, so they reach the receiver on time. Some emails are only effective when sent on time, like early-morning task lists, reports, or birthday wishes.