8.4 Trashing messages

For regular mailboxes, trashing works like other marks: when executed, the message is flagged as trashed. Depending on your mailbox provider, the trash flag is used to automatically move the message to the trash folder (mu4e-trash-folder) for instance.

Some mailboxes behave differently however and they don’t interpret the trash flag. In cases like Gmail, the message must be moved to the trash folder and the trash flag must not be used.