Enigmail guide is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Based on a work at mkaysi.github.com.
This depends on your OS. You should also read my previous guides about GPG and Icedove / Thunderbird.
+You need at least packages icedove or thunderbird and enigmail, but I recommend you to install gnupg2 and pinentry packages too.
+++aptitude install thunderbird enigmail gnupg2 pinentry-curses pinentry-gtk2 pinentry-qt4
+
NOTE: In Debian Thunderbird is called Icedove and the package is icedove.
+You need GPG-tools, Thunderbird and Enigmail
+You need GPG4Win, Thunderbird and Enigmail.
+If Enigmail wizard doesn't appear by itself, open it manually from OpenPGP (menu) --> Enigmail wizard.
+NOTE: Allow wizard to do changes, which it wants.
+You probably want to see the HTML in case the message has been sent using HTML.
+You can see the messages in original HTML easily. Open View (menu) --> Message body as --> Original HTML.
+This is documented in my Icedove / Thunderbird guide.
+Open Edit --> Account Settings --> OpenPGP security and select "Enable OpenPG support (Enigmail) with this user information". Then select "Use specific OpenPGP key" and press the "select key" button. Now just select your private key.
+After you have selected the key, I recommend you to select the first and the second boxes, which are about signing.
+Remember to do this for multiple identities. Select the account and then click the "manage identities" button.
+I have documented this in my Icedove / Thunderbird guide.
+This only changes the charset line to UTF-8 or removes the mentioning of charset in signature.
+Adele is PGP email bot. You can send email to it and it will tell you if it can decrypt your email or is it signed.
+You can get the PGP key of Adele by running
+++gpg2 --keyserver pool.sks-keyservers.net --recv-keys 92AB3FF7
+
Just send your email to adele-en@gnupp.de and it will reply shortly.
+PGP/MIME puts the signature to signature.asc ataachment and PGP/INLINE into "mess" in the bottom of email.
+WARNING: This might not work with some mailing lists (for example Ubuntu, Mozdev and GnuPG mailing lists)!
+There is open bug report about PGP/MIME not working on Ubuntu MLs at LaunchPad, 996581
+NOTE: If you want to sign emails and use HTML at the same time, you must use PGP/MIME or otherwise your signature cannot be verified!
+To send PGP/MIME by default, open Edit --> Account Settings --> OpenPGP security and check "Use always PGP/MIME".
+Remember to check to do this for your all identities in case you have more than one of them. Edit --> Account Settings --> "Manage Identities..." button and after selecting identity, you can find OpenPGP security tab.
+To enable sending OpenPGP headers, return to OpenPGP settings (mentioned above) and click "advanced".
+Select the both checkboxes and write URL where your key is located. If you don't have homepage, you can link to webui of your preferred keyserver.
+These headers appear in email source like this:
+OpenPGP: id=82A46728;
+ url=http://mkaysi.github.com/PGP/key.txt
Enigmail guide is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Based on a work at mkaysi.github.com.
On Debian you need package Icedove, but you should also install Enigmail and GnuPG and GnuPG2
+++aptitude install icedove enigmail gnupg gnupg2
+
On Ubuntu you should install same packages as with Debian, but Icedove is called as Thunderbird.
+++aptitude install icedove enigmail gnupg gnupg2
+
You need Thunderbird, but you should also install GPG-Tools and Enigmail.
+You need at Thunderbird, but you should also install GPG4Win and Enigmail.
+When you open Thunderbird / Icedove for the first time, it will ask for email address and password. Give them and Thunderbird will attempt to find the details and after that it downloads emails from the server.
+To send emails in plaintext, open Edit --> Account settings --> Composition & Addressing and uncheck the box "Compose messages in HTML format.
+See my complaining about HTML usage here.
+This doesn't affect emails with any visible way. It might just remove some charters in message source and it will allow you to send more charters than some latin1 charset. It might also remove charset line in PGP/INLINE signed emails.
+Open Edit --> Preferences --> Display --> Formatting --> Advanced... --> Character Encodings and set both "Outgoing Mail" and "Incoming Mail" as "Unicode UTF-8" and check the checkbox "When possible, use the default character encoding in replies."
+I am going to write explaining for this later.
+My GPG guide and my Enigmail guide.
+
Thunderbird / Icedove guide is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Based on a work at mkaysi.github.com.