Integrating Gmail with Thunderbird, & GnuPG

Here's a quick how-to on integrating GnuPG with Thunderbird and Gmail. Enjoy.

1. Install packages: $ sudo apt-get -y install thunderbird gnupg enigmail

2. Configure Thunderbird
a. Press "Skip this and use existing account."
b. Enter the below information
User Name: username@gmail.com
Email Address: username@gmail.com
Password: <password>
Incoming Mail Server: IMAP imap.gmail.com 993
Outgoing Mail (SMTP) Server: SMTP smtp.gmail.com 465
c. Navigate to ' https://www.google.com/settings/security/lesssecureapps ' and 'Turn on' access for less secure apps. Not too fond of this setting.

3. Verify existence of Enigmail and Restart Thunderbird.
a. Verify existence of Enigmail: Tools > Add-ons > Extensions > Enigmail
b. Close and relaunch Thunderbird.

4. Configure Enigmail:
a. Launch Wizard: Enigmail > Setup Wizard
b. Press "Next" to setup a standard configuration
c. Enter a passphrase and confirm it. Press "Next".
d. Actively use your system in order to generate enough etropy for faster key generation.
e. Select "Create Revocation Certificate" and burn to a disk. Re-enter your passphrase. Save to desired file location and press "OK"
f. Press "OK" and "Finish" to complete configuration.

5. Upload Public Key: Enigmail > Key Management > select key > Keyserver > Upload Public Keyserver > select "pgp.mit.edu"

6. Export public key and secret key to file.
a. File > Export Kyes to File > Export Public Keys Only > select file path > Save
b. File > Export Kyes to File > Export Secret Keys > select file path > Save
c. Burn to CD with the revocation certificate.

7. Sign an email: Write > Attach My Public Key > click "This message will be unsigned and encrypted" > check "Sign Message" > OK

8. Navigate to Thunderbird's "Preferences" > "Account Settings" > "OpenPGP Security" > check "Sign messages by default" and press "Ok".