A user deletes a message from a mailbox while on a desktop. What happens to the email message on the user's synchronized devices?

It also deletes

It is marked for deletion

It moves to a To be Deleted folder

Nothing

Depends on the configuration of the email because there are two protocols POP and IMAP, the most recent protocol is IMAP, we can delete an email and this It moves to a To be Deleted folder, this happens because the email is stored in the server, but with the protocol POP the email is stored in the server and downloaded to the application, if you delete an email, this is deleted in all devices.

is deleted or either to be deleted folder