I'm planning on migrating from a Cobalt RAQ4 to a PLESK driven server. The PLESK migrationtool works fine for migrating the web content from my cobalt server. The problem is the mail of my costumers. There are custumers who have their mail archive stored in Neomail on the RAQ. Is there a way to migrate all these mails to the new server with Horde as the new webmail application?