Last updated: 2000-08-11
This document is an attempt at consolidating information about mail clients with an emphasis on whether they support PGP and PGP/MIME. The information is provided in the form of tables. There is one table per operating system at the moment.
This page is purely for informational purposes only. A scientific study was not conducted in determining its contents. Stuff may be wrong. It's a work in progress. You have been warned ;-) If you see problems, for the moment, I'd suggest mentioning it on the pgp-users mailing list. If you have additions or changes to suggest, I would appreciate it if you would provide URLs where appropriate. I have nothing against operating systems not listed here and am willing to add additional ones as I get more information.
|Native||Code for support exists in client |
|Plugin||Client supports a "plugin" architecture and an appropriate plugin exists|
|Tool:X||Installing an external tool "X" provides the functionality|
|None||Document author has received what he feels is reliable information indicating no support |
|UA||Unknown to document Author|
 As far as the author knows, in order to process PGP messages it is necessary to install a program such as PGP or GNUPG in addition to the mail client. Not that this is technically a necessity -- it's just that I've never encountered a mail client that didn't have this requirement. Exception: apparently, The Bat! has an internal PGP implementation.
 If something is marked "None" it doesn't mean that you can't process PGP messages manually via the clipboard or some other "manual" mechanism.
|Name of the client||PGP (non PGP/MIME) support||PGP/MIME support||Support for more than US-ASCII when using PGP/MIME. I will list language names here that have been reported to work. A classic case of support for a language that doesn't seem to get implemented properly is Japanese. I used to call this column "Multilingual", but people didn't seem to read this description.||Miscellaneous information|
|Mew||Native||Native||Japanese||With appropriate hacking, Mew can also be used w/ Mailcrypt|
|mh-e||Tool:Mailcrypt||UA||distributed w/ Emacs (& MH?)|
|XFMail||Native||Native?||support for PGP 2.6.x, 5.0, 6.5, and GnuPG 1.0.x -- PGP/MIME support a little unreliable? software in transition? old link|
|KMail||Native?||UA||support for PGP 6.x and GnuPG 1.0|
|Eudora Pro||Native+Plugin||Native+Plugin||I have found Japanese to not be handled correctly when using PGP/MIME|
|PMMail||Native?||Native?||Uses licensed NAI PGP|
|The Bat!||Native or Plugin||UA||Has own PGP implementation -- based on OpenSSL|
|Lotus Notes||Plugins: bundled w/ NAI PGP 6.5.3, PGPNotes, PI Mail||UA|
|MS Outlook 97/98/2000||Plugin||UA|
|MS Outlook Express 4.0/5.0||Plugin||UA|
|Calypso||Plugin||UA||support claimed for PGP 5.5, 6.0, 6.5|
|Wemail||Tool:Goma2||UA||S/MIME support w/ option, PGP5.5 support w/ Goma2|
|Becky! Internet Mail||Native?||UA||PGP 2.63 and PGP 5.53 are reported to be usable|
|Netscape Messenger||Plugin, Half-Plugin||UA||"Half-Plugin" features are limited to encryption and signing -- no decryption or verification|
|DinosaurX Internet Mail & News||UA||UA|
|MS Outlook Express||UA||UA|