We'd like to move from using Yahoo! Mail to our Google Apps account.
It'd be great to be able to migrate all the mails across from the old accounts to the new. If we were using Gmail accounts this would be easy as the migration is offered by Google, for some reason they don't offer this to those using custom domains. As far as I know Yahoo! don't offer POP or IMAP access to non-paying customers and I'd rather not pay $20 per account that I want to migrate.
Anyone know of any easy and cheap solutions?