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Enigmail is an extension to the mail client of Mozilla, SeaMonkey, and Mozilla Thunderbird which allows users to access the authentication and encryption features provided by GnuPG.

Main Features:

  • Encrypt/sign mail when sending, decrypt/authenticate received mail
  • Support for inline-PGP (RFC 2440) and PGP/MIME (RFC 3156)
  • Per-Account based encryption and signing defaults
  • Per-Recipient rules for automated key selection, and enabling/disabling encryption and signing
  • New: OpenPGP key management interface

What's New

Version 1.7:


  • Convenience mode for sending mails
  • Automatic encryption if all keys are known
  • More intuitive view of encryption/signing states in icons and menus; partially new icons
  • Filter in key selection dialog
  • Better selection options for importing keys from address book
  • Some support for PGP/MIME mails deformed by Exchange more...


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Enigmail User Discussion

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Big-Mac-XXL Member IconReview+263

Two years back I had big problems with crashes of Thunderbird 2 because of Enigmail 0.9 when I was switching from Tiger to Leopard. I had to stop using Enigmail completely.

About Enigmail 1.1.2 on Thunderbird 3.1.2 and Snow Leopard I can only say good things. It works fine, no crashes anymore. Excellent tool.

The bad thing is, no one is using encryption nowadays! Even worst, most people using web mail. Hotmail, Gmail, Yahoo. They don't even know email programs. Strange times! Or I'm growing old.

Reply1 reply
Version 1.1.2

The problem is that, the times when you really need encryption, like email communications with your bank, your lawyer, etc., it's either not available or would require training that it's not your job to provide. The casual use of encryption by open source geeks did not transfer to the mainstream, because their advocacy of it had no correlation with real world usage by normal people. It was too much about tin foil hats. Most folks don't care about encrypting everything, they only want to encrypt things that are truly sensitive or important. It's the barrier to that kind of selective use that's holding things back.

Robk Member IconComment+238

Does v1.0.1 run on Snow Leopard?

Reply0 replies
Version 1.0.1
Monkeyjunkey Member IconReview+1409

Great tool. And since GPGMail Plug-In has become incompatible with 10.6: Thunderbird3.0b4 and this have become a perfect replacement.

Reply1 reply
Version 0.96

Forgot to mention: if you want to use Thunderbird 3.0b you have to use the Enigmail Nightlys because 0.96 does only support Thunderbird 2.

Find them here:

Big-Mac-XXL Member IconReview+263

Since my upgrade from Tiger 10.4.11 to Leopard 10.5.2 Enigmail 0.95.6 freezes my Thunderbird all the time when hitting Reply. And those mails are text-only and without any encryption.

On Tiger no problem at all, Enigmail runs perfectly. On Leopard PGP/GPG with Enigmail becomes unusable. Beware switchers!

This problem is already known in the Enigmail web forums. I hope there will be a solution soon.

This problem might only occur if you are running a PowerPC Mac, although I heard otherwise. A friend of mine with an Intel Mac has no problems at all.

Reply0 replies
Version 0.95.6
Webpatser Member IconReview-2

Does a good jobs, of encrypting and decrypting emails. Good integration in thunderbird and keys searching in keyservers is fast...

Reply0 replies
Version 0.94
user icon+868
Version 1.4
user icon+1409
Version 1.2.1
user icon+1409
Version 1.2
> 5 7


Current Version (1.x)


Downloads 13,967
Version Downloads 138
Type Internet / Email
License Free
Date 14 Jul 2014
Platform OS X / Intel 32
Price Free