Kerio connect and time limited sync issues

Hi, I’m trying EMclient to understand if we can leave Outlook.

We use a Kerio server on local machine.

Since we have tons of old mails, we don’t want to sync all the mails, but only newers (last year).
When we need oldest mails, we use the search function.

EMClient sync all the mails, even if in Message sync time period I choose 1 day.