[epochwolf]

HIPAA requires any email with patient data be encrypted. That kills any attempt to receive email on a smart phone.

[Zak]

[Repeat rant about people not adopting PGP when we've had it for 27 years]

Nothing about a smartphone prevents email from being encrypted. The fact that nobody's sending encrypted email does, but that's a user adoption problem rather than a technical problem. The technical problem is solved, solved well, and has been solved for decades.

[Spooky23]

Encryption is easy. Key management is not. PGP is a lousy solution. Too difficult to use and sacrifices too much functionality.

The world needs something like iMessage but more open.

[dqv]

The bigger problem is that neither Apple nor Google have implemented device-local PGP encryption in their default email clients. Apple is one-step ahead and actually has had s/mime support for a while, but it really needs wide support on Android phones as well to become ubiquitous. It would set an implied standard for all other email apps on iOS and Android.