There are several slightly less hardcore alternatives to Mutt for those wanting a more modern e-mail experience without the security baggage of running an entire browser. Sylpheed for instance is a very pleasant text-only MUA (http://sylpheed.sraoss.jp/en/). For added peace of mind it does not take long to write an AppArmor profile to further confine Sylpheed to just the parts of your filesystem you'd like it to be able to access.