I'm working on moving a client's hosting to a new provider as part of a site redesign. They're currently using Rackspace to host their site. Their domain is registered with ENOM. My one concern is their email accounts. Currently, they login to webmail.theirdomain.com to read email. There is a "control panel" (very minimal) at websitesettings.com for their account, but I can't find any information about email servers there. I'd like to transition them to Google Apps, but I need to first make sure all old emails are backed up, as well as minimize any downtime.
Has anyone dealt with a setup like this before? Know where I should start?