確実に動作します。私信の Security 対策に、必要不可欠な推奨品です。 Rated 5 out of 5 stars

遅ればせながらの Review です。
丁度、一年前から使用を始めました。
非常に有意義な機能で、気に入っています。

経験上、導入方法(install と set-up)と実際上の使い方(How-to)が平易ではない(It's Not Easy)と感じたため、簡単な解説を加えます。

①導入方法(install と set-up)と実際上の使い方(How-to)は、「ThunderbirdのHelp」→「プライバシーとセキュリティの設定」→「メッセージのデジタル署名と暗号化」で詳述されています。Tutorial(対話)形式で、解りやすくまとめられているのですが、解説量が多く、読み進めること自体の時間を要しますが。
②公開鍵「GnuPG」の入手が必要になります。数種のバージョンがありますが、Win版では「Gpg4win-Vanilla」(4MByte)で十分です。full version (30MByte)/-Light版(13MByte)は、「Enigmail」では使用することがない(パワーユーザー用途の)高機能版です。
③「Enigmail」の install を実行すると「設定ウィザード」が起動するので、各種の設定は簡単です。
④(Enigmail の)default は、英語/独語です。(解説は省きますが)多言語化は可能です。
⑤「秘密鍵」の作成と管理は、Kee-Pass(KeeFox)などの「パスワードマネージャー」の活用を推奨します。「Enigmail」でのパスワード認証は、自動ログイン機能もコピペ(Copy & Paste)も受け付けないので、作成時には(手入力に不自由しない文字種の選択などに)注意が必要です。
⑥「Enigmail」を使用すると送信用のメッセージは、「プレーンテキスト」形式に限定されるので、絵文字や修飾表示機能、文字種・サイズ変更などの使用が制限されます。
※HTML形式でメッセージを作成した場合は、送信時に plain-text(ASCII)への変換が成されますが、一部に文字化けが生じます。
⑦不測時における「失効」処理が可能です。⑧「公開鍵」なので、鍵の完全消失(Lost)のリスクもありません。

導入時と使用時に多少の難解さを感じたり、(プレーンテキスト形式に)面白味を欠いたりするとも思われますが、システムの完成度(安全で確実な暗号/複合化、高速通信化)を優先させた結果として、理解できます。

確実に動作します。私信の Security 対策に、必要不可欠な推奨品です。

Rated 5 out of 5 stars

Very nice! GPGMail is commercial now and i really dont trust in non-free software for encryption, so switched to thunderbird with enigmail ... awesome because it is fast (and imho fasterer than Mail.app), encryption and signing works and is highly visible, configuration is not that hard, just read trough the settings and skip what you dont get and change it later. Awesome and very important addon for privacy and freedom of the common man!

Funktioniert Rated 4 out of 5 stars

Wenn man sich einmal mit den Einstellungen zurecht gefunden hat, funktioniert Enigmail reibungslos. Das ständige Eingeben des Zugangsschlüssels, ist zwar etwas nervig aber dafür sicherer. Zum Entschlüsseln benötigt man auch immer Enigmail und man kann nicht schnell im Browser die Mails checken, aber das kann man Enigmail ja nicht anlasten ;)

Attachment paperclip icon will become invisible Rated 3 out of 5 stars

If an enigmail user sends/receives a mail with attachments to/from another enigmail user, the papaerclip icon will become invisible. It is annoying.

Broken - Lost Mail - Encrypts draft even when set not to encrypt Rated 1 out of 5 stars

It's broken. I lost mail. Had to disable it. It encrypts drafts even when set not to encrypt! I had to edit a draft, and when I hit escape in the popup, it deleted the entire mail body!

Rated 4 out of 5 stars

With the lastest version fixing the BCC and encryption issue another *MAJOR BUG* was introduced - every time you write a new message with a BCC and without *ever* use encryption you are asked how to handle the BCC adress and obviously encrypt the message get selected - please respect the global settings for sign only

Excellent Rated 5 out of 5 stars

Simple to use, 5 stars!

This review is for a previous version of the add-on (1.7). 

Rated 5 out of 5 stars

An essential addon in this day and age when our privacy is no longer respected. Enigmail makes it easy to make it a habit to use encryption whenever you can.

This review is for a previous version of the add-on (1.7). 

Rated 5 out of 5 stars

This add-on makes me feel like a kid again. Encoding messages to friends....and really it was ONE friend. And he never responded. That was dark.

BUT!... I love this app because it's real world crypto-security.

This review is for a previous version of the add-on (1.6). 

Rated 5 out of 5 stars

I love this cool addon, it is very usueful

This review is for a previous version of the add-on (1.6). 

Top Addon Rated 5 out of 5 stars

Ich nutze Enigmail seit Jahren ohne Probleme. Sehr gute Arbeit. Danke!
Das Einzige, was mir nicht gefällt, ist, dass man die Passphrase nicht mehr aus dem Zwischenspeicher löschen kann, da diese nun vom gpg-agent verwaltet wird.

This review is for a previous version of the add-on (1.6). 

Great extension, but the defaults could be better Rated 4 out of 5 stars

This extension works very well, but I dislike the default of plain text signing. It's a great way to annoy everyone on a mailing list... It seems the rationale is to have better support for receivers using bad mail clients, but I doubt they're verifying emails via copy-paste if they can't be bothered to use another client.

This review is for a previous version of the add-on (1.6). 

Qu'apporte Enigmail ? Rated 3 out of 5 stars

Bonjour,
J'ai du mal à voir ce qu'apporte Enigmail par rapport aux options de base de Thunderbird:
.Chiffrer ce message
.Signer numériquement ce message

Merci

This review is for a previous version of the add-on (1.6). 

It can't install in FossaMail Rated 1 out of 5 stars

Alright, I gave it a look and it can't install in FM 24.2.0b1- but it could install in TB 24.2.

I also went to the support page which then insisted on creating an account at Sourceforge. I no longer trust SF due to it's recent changes and the account also could not be created no matter how much I juggled things around. Even if that did work that is an awful lot of steps!

If it can be modified to work correctly I will come back and write a better review. Until then it is 1*

This review is for a previous version of the add-on (1.6). 

Rated 5 out of 5 stars

perfect!!!

This review is for a previous version of the add-on (1.6). 

Rated 5 out of 5 stars

Fonctionne parfaitement sous Win7 ou Fedora19.
Dommage que ça ne fonctionne qu'en texte brut, mais on va pas chipoter :)

This review is for a previous version of the add-on (1.6). 

Nearly perfect Rated 5 out of 5 stars

It's a wonderful tool and essential for secure mail sending. It is easy to use under Linux and Windows upto Win7.It doesn't work with Thunderbird 24.1.1 and Windows 8.But at least it is better to do without Win 8 than Enigmail!
---------------------------
Hello Patrick, unfortunately I don't see a possibility to answer to your statement directly, so I would like to tell you in this way, that I made the experiences with Enigmail and Thunderbird in Win8 by my self. I have screenshots, which show, that Enigmail 1.9 is not compatible to Thunderbird 24.1.1
I run several Linux systems as well as Win 7/8/8.1, but it is only in Win 8 and 8.1. not compatible.
I don't know why.

This review is for a previous version of the add-on (1.6). 

Why would Enigmail not work on Windows 8? I cannot see any reason for this, and I know of many users who use this combination successfully.

Rated 5 out of 5 stars

Mandatory addon for Thunderbird. Works flawlessly with the newest version. If you value your privacy, this is your best choice for protecting yourself.

This review is for a previous version of the add-on (1.5.2). 

Searching the content of encrypted mails is not possible Rated 2 out of 5 stars

Encryption and decryption of mails works perfectly but searching for a content in the mails is not possible any more. With this restriction it is not possible for me to use enigmail.

This review is for a previous version of the add-on (1.5.2). 

Rated 3 out of 5 stars

i don't sure . Are u satisfied?

This review is for a previous version of the add-on (1.5.2).