You can schedule emails in Gmail on the desktop website or mobile app, using the schedule send tool.

Gmail has a to-do list function, which can be used to create a to-do list in a mailbox, but it is cumbersome to bother doing your own tasks on the to-do list while checking your schedule by email.

To set up a Gmail out-of-office reply, go to your Settings and set a start date, end date, and message.