How to merge two folders in dovecot 2.2?

Question

Dovecot

Dovecot has a config 15-mailboxes.conf, I entered into it:

...
  mailbox Sent {
    auto=create
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox "Sent Items" {
    special_use = \Sent
  }
...

but all the same, when sending a letter from a mobile phone with Windows Phone 8 OS, the /Sent Items folder is created and the letter is placed in it.
How to merge these two folders? So that when sending a letter on the phone, it gets into the Sent folder.

Answer 1

In general, it doesn't matter what you write to the dovecot configs - if the mail client does not respect the "special_use =" directive, then you will not do anything.