Splitting archive file - or export older mails?

I had problems with my archive file - the mail_data.dat file in the archive folder increases up to about 40 gb. How can i split this file - or even export older mails to an file not listed in eM Client, but importable if needed? Is this possible?

Thank you very much!

a. ruettger


I have the same problem, My archive zip file is over 40G and it is pain to back it up. Is it possible to split the one big Archive file in a few small or export part of archive to extra file? Typically, users archive emails by years and the older emails are not touched. So, there is no need to open/update/backup the huge archive just to update a few last emails…

Any suggestion how to do it?