Migrate 4 Mailboxes to Exchange

I have four live POP / IMAP mailboxes that must be moved in full to Microsoft Exchange. Every message currently stored on the servers needs to come across—nothing can be left behind—but I am not concerned... (Budget: €30 - €250 EUR, Jobs: C# Programming, IMAP, Microsoft Exchange, Microsoft Outlook, Office 365, System Administration, Technical Support, Windows Desktop)