Currently it's the most needed feature.
Yes, we need it!
We like this idea! Thanks for the comments and votes.
We need it !
We need it !!!
Yes, we need it.
We like this idea! Whilst not assigned to a release yet, we are looking at comments and votes for this request.
Its best feature request and most needed feature for our company!
Some of the requests in the comments are already addressed here. For example type a number and you can filter messages received within a certain time period. Type a number and you can filter by size. You can sort by unread messages, by flag and by recipient in the sent folder. See: http://kb.kerio.com/product/kerio-connect/email-clients/kerio-connect-client/sorting-email-messages-in-kerio-connect-client-1204.html and http://kb.kerio.com/product/kerio-connect/email-clients/kerio-connect-client/searching-in-kerio-connect-client-1879.html