In the realistic world where perfect is the enemy of good, I'd argue that S/MIME is actually better than PGP/GPG for most email users. The "missing" steps to m

In the realistic world where perfect is the enemy of good, I'd argue that S/MIME is actually better than PGP/GPG for most email users. The "missing" steps to make it truly user friendly IMO are: - a more reliable/user friendly free S/MIME issuing CA. So far the best option seems to be Comodo, but it's far from a great experience. - improved client support for setting up keys+certs. e.g if iCloud Keychain would/could sync these items to/from iOS devices, 90% of the hassle with setup would be resolved. - defaulting on to display signed mail status in mail clients. Edit: clarified solution to: CA.