The source code for Email Yourself! is available on GitHub.
I am no longer updating this add-on with new features or fixing any currently existing feature that malfunctions.
I will still update the extension to be compatible with future versions of Firefox.
If you need an alternative extension for Email Yourself!, I recommend F1 by Mozilla Labs and Shareaholic.
Email Yourself! allows you to email yourself the link, title, & highlighted text of the page you are viewing using GMail using a toolbar buttons and/or Hotkeys!
Before using the extension, edit the two preferences:
Preference 1: Enter your gmail address
Preference 2: Enter a personal identification message (suffixes your subject). By default it's set to "-Sent via Email Yourself!" This feature was implemented so you could setup a gmail filter/label to filter out emails that you send to yourself.
The toolbar buttons can be found by going to "View > Toolbars > Custom" and dragging the "Email Yourself" button to the main firefox toolbar (the one with the stop/refresh buttons, etc...)
Email Yourself can be executed by hitting the toolbar button or hitting the following hotkeys.
For Windows/*nix Users: alt+windows+tilda
For Mac Users: options+command+tilda
Once executed, the following will happen:
The Gmail Compose-Message page will open in a new tab.
Your email address will appear in the "to" line of your email
The title of the article/webpage you are viewing will go in the" subject" line of your email, which will be suffixed with your personal identification message.
The address/url will go in the body area of the email.
The highlighted-text will appear below the address/url.