On 02/14/2014 09:58 AM, Roman Gelfand wrote:

Is web or windows client which allows for viewing contents of all mailboxes without having to login with their id?

Thanks in advance

You could focus on the server rather than the client.

http://wiki2.dovecot.org/Authentication/MasterUsers

There really could be more ways to do it than are listed on that page. Your path forward would depend firstly on your current user database setup.

Of if you use e.g. maildir and you want to access it directly using something other than dovecot then you may try but it wouldn't be the best idea.