Trying to back

Hi, I am trying to backup multiple mail accounts by using imapsync and Dovecot on my local machine. I am using maildir as a mail storage format and currently have the following setting on my local machine :-

mail_location = maildir:~/Maildir

I am afraid that if I imapsync multiple accounts they will all get stored in the same location. Is there a way to seperate the accounts based on the email address?

Appreciate if someone could advise.

Thanks! Kevin