Hi John,
Yes a Gmail address will definitely work with Method! Are you creating a standard @gmail address or are you switching over to Google Apps for business? If you're switching over to Google Apps then check out our MethodCRM app for Gmail which is free to use for current MethodCRM customers. It's basically a small-scale version of MethodCRM which works through Gmail allowing you to view and search contacts, view and add activities, cases, opportunities, transactions, etc. If you would like to check it out, you can find it on the Google Apps Marketplace.
We recently had a guest blogger post about the benefits of switching to Google Apps for business.
- Ashur