[Dovecot] info deleted messages imap

[Hola]

Hi!

I want to know the number of messages deleted when the mail user connect by
IMAP protocol. When the user uses POP, we got this directive in the
configuration file:

pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s

This is the log:

dovecot: Feb 09 02:31:02 Info: pop3-login: Login: user=<xxxxxx>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 09 02:31:02 Info: POP3(xxxxx): Disconnected: Logged out
top=2/3756, retr=0/0, del=0/7, size=17392

If you look at "del=0/7" we know that user deleted 0 messages. When the user
log in the account by IMAP protocol, appears the following:

dovecot: Feb 09 02:02:36 Info: imap-login: Login: user=<xxxxx>,
method=PLAIN, rip=82.xxx.xxx.xxx, lip=82.xxx.xxx.xxx
dovecot: Feb 09 02:03:02 Info: IMAP(xxxxx): Disconnected: Logged out

And we don´t know the number of messages deleted, the question is: there is
any directive like "pop3_logout_format" applied to IMAP?? Something like
"imap_logout_format" ??

Dovecot version: 1.0.rc17.