Which WebMail client supports PGP\GPG?

Question

PHP

Hello.
Recently began to think about enciphering\signing of mail.
At the same time, I have not been using local clients for a long time - I'm used to the Web interfaces of Gmail and Yandex-mail.
In general, now I want to deploy a WebMail client on my server, which will access my mailboxes via IMAP (there are 5 of them at the moment), and will be able to sign \ encrypt \ decrypt letters using PGP \ GPG \ GnuPG.
My favorite is RoundCube, but PGP support is not implemented there yet. Are there other clients that meet the above requirements?

Answer 1

and why to work in other people's web muzzles own server?
That's what mailvelope.com is for.

Answer 2

What about the meaning? Security is lost.

Answer 3

You can look at latmail.eu, they already have everything you need + they will even make and set up the keys for you.