If anyone wants to help do this on desktop, some folks have been building PGP support into a Nylas N1 plugin! <a href="https:&#x2F;&#x2F;github.com&#x2F;nylas&#x2F;N1&#x2F;issues&#x2F;96" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;nylas&#x2F;N1&#x2F;issues&#x2F;96</a><p>(I work at Nylas.)