Do MS Outlook save emails as drafts and not delete them?

Question

Outlook

A task for reflection, in general, our user has a problem in the company. Letters are constantly saved to draft, when answering an incoming letter, logically, it should be deleted, but not deleted, even after sending, this user is sitting on different machines, but the situation is the same. Exchange 2010 server. Many self-defense techniques applied, but did not help. Disabling the rules didn't help. Xs in short how to defend yourself from such misfortunes, help if there is or was anyone in such a situation. Thank you!

Answer 1

If you try to enter the web client (OWA), delete all letters from the draft there, and also look at the settings for incoming mail rules there

Answer 2

Faced a similar problem. Outlook 2016 + Yandex mail. For one user, the letter remains in drafts after sending. After switching to Outlook, the problem may disappear, but then it repeats