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You can probably use a service like zzzz.io or DynaDNS. This will eliminate the need for static IP. No?

issue is less the ip address then it is the need for special MX dns records, which most of those services don't let you set up

Very true, but some dynamic dns providers do allow MX records.

A list of them is here (found via search, no suggestion of "goodness"): http://www.gnutomorrow.com/best-free-dynamic-dns-services-in...