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I'm trying to setup Enigmail to work in Thunderbird.

Enigmail says it could not find GnuPG when I open Thunderbird > Tools > Addons > Extensions > Enigmail Preferences > Basic tab.

I looked in my /usr/bin and see there are several executables that seem relevant. Which is the correct one to specify?

  • gpg
  • gpg2
  • gpg-agent
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Enigmail wants the "gpg" command-line tool. (gpg-agent is a helper tool, and I don't know what "gpg2" is - that's not present on my system.)

So, you want to give it:

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I would strongly recommend using gpg2 as it is geared towards the desktop.

Under OpenPGP -> Preferences, check "Override with" and put in the following in the link next to it:


If it gives you a further error message, install gnupg2

sudo apt-get install gnupg2

Note, do NOT uninstall gnupg. This is still used by many other parts of the operating system, including aptitude itself.

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On Quantal I have:

gpg --version
gpg (GnuPG) 1.4.11


gpg2 --version
gpg (GnuPG) 2.0.17

libgcrypt 1.5.0

The problem I'm having and the reason I wanted to see if Enigmail can make my key (how I ended up here) is that both gpg --gen-key and gpg2 --gen-key are giving me grief from CLI and the GPA Privacy Assistant won't allow me to generate a 4096 key. Turning out a bit complicated for a beginner. :)

I will not know what to add either, without just trying it (I guess), because besides what dholbert listed - there is also:

~$ whereis gpg
gpg: /usr/bin/gpg /usr/bin/X11/gpg /usr/share/man/man1/gpg.1.gz

~$ whereis gpg2
gpg2: /usr/bin/gpg2 /usr/bin/X11/gpg2 /usr/share/man/man1/gpg2.1.gz

No telling how it will turn out:

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