Both phones, with their QWERTY keyboards, will jive well with Mail for Exchange, and thanks to its integrated Internet connection (with the right data plan, of course), you are able to send out those emails in a flurry without missing a beat, although those who are too used to a touchscreen virtual keyboard might find themselves fumbling with a step back.
Some of the Mail for Exchange features available in this app include notification of new work emails, secure synchronization of your email, calendar and contacts, look for contacts in the Global Address Book, the ability to create, accept and reject meeting requests, not to mention being able to flag, move and copy messages. You can also download, view and send email attachments, now how about that?