Deleted icon

[rokj]

Hi,

in some folder ... I've got "deleted emails", but do not know what have I done.

How do I get message to have a deleted icon?

[JohnDoh]

These are messages which have been marked as deleted but not yet removed. To remove them for good you can compact the mailbox. There's a preference in Settings > Preferences > Server Settings where the default behavior of message deletion can be changed.