First, install the extension. Both these applications use the same extension. You will see the below prompt:
Click “Allow” and the plugin will install. Restart Firefox when prompted to do so. Now you will see an enMailing icon on your Firefox toolbar:
Click that icon, and the following dialog will pop up:
Enter your enMailing username and password. Also specify a name for this device. It’s a good idea to use a name that you will be able to recognize in the future, such as “Firefox (home)” or “Firefox (work).” Giving a descriptive name will make it easier for you to de-authorize the device in the future should you ever want to. After entering your username, password, and the device name, click “Authorize.” If your username and password were correct, Firefox will become an authorized device:
The “Default Group for Encrypting” setting allows you to set the group for which you will encrypt messages. This is easy to change later, but you can change it now if you want to. Click “OK.” You are now ready to encrypt and decrypt messages in your browser. The following will use Gmail as an example. First, type the message you want to encrypt:
To encrypt the entire message, you have two options. You can either hold ALT and click on the message body, or you can right-click on the message body to bring up the context menu. You’ll see an enMailing option on the context menu:
Just click “Encrypt All” and the entire message will be encrypted. You can also change the group for which to encrypt the message via this context menu. Your message will look something like this once you encrypt it:
Just click “Send” and you’ve sent your first encrypted message! If you realize that you want to edit your message some more before sending, it’s easy to decrypt it. Just click on the encrypted message, and it will decrypt. If you decide you want to encrypt only a portion of your message, just select the portion you want to encrypt:
And then right-click to bring up the context menu:
You will notice that the “Encrypt Selection” option is now available. Click that and only the portion of the message you selected will be encrypted:
Once again, you can send the message, or if you want to continue editing, just click the message to decrypt.
When you receive an encrypted message, the process for decrypting is very simple. Just click on the encrypted message body and, assuming you have access to the group for which it was encrypted, the message will be decrypted.