Sent folder - no synchronization between different computers

Hello, I am interested in how to resolve my desire to set up (IMAP) synchronization of the sent mail folder on 3 different computers where I use the same email address. In the inbox, I see the same received messages on all computers, but in the sent folder, I only see those sent from each individual computer.

In my Android emClien App I can see all sent items from several computers.

Thanks for any advidse