Migration problem

Dear Sir,

I'm trying your Zoho Mail both for my personal use and my business (10 users), but when i try to use the migration wizard to import my old mails, there seems to be a limit of 200 mails imported pr. folder.

Is that a limit in your migration tool and can you advice a way to import account with folders containing more than 200 mails each?

Thank you,
Soren Munk.