I've set up a few accounts for clients with ZOHO and have found it to be a great alternative to hosting account based emails.

I'm currently setting up an account that is migrating mailboxes from and existing server. I have used a referral from another client's account to set it up to get the extra 5 mailboxes.

Problem is, I can't get the extra 5 mailboxes without updating the MX records on the new account but I can't update the MX records until I migrate all the email accounts from the old server. There are more than 5 accounts that I need to migrate.

What do you recommend is the best way to handle this problem?