Eudora Keybindings
Penelope adds a new settings panel, appropriately called 'Penelope':
This panel presents 2 options; Shortcuts (key bindings) to use, which is covered here, and the [UI style].
"Use Shortcuts"
You can choose whether to use Eudora-like key shortcuts, or use the standard Thunderbird Shortcuts. This page will not attempt to list all the shortcuts, but will list some of the most-common.
Check Mail:
- Penelope: Control/Command - M (Note, on Mac OS X Command-M is currently used by the System to minimize the window)
- Thunderbird: Control/Command-Shift - T
 
New Message:
- Penelope: Control/Command - M
- Thunderbird: Control/Command-Shift - T
 
Send/Queue Message:
- Penelope: Control/Command - E
- Thunderbird: (none)
 
Open Address Book:
- Penelope: Control/Command - L
- Thunderbird: Control/Command - 2
 
A more comprehensive list:
| Keys | Function | Supported | Issues | 
|---|---|---|---|
| Command+. | Stop the current action | ||
| Command+0 | Open Out mailbox | Finds Sent, not Out | |
| Command+1 | Open In mailbox | Finds Inbox, not In | |
| Command+3 | Selected text URL 1 | ||
| Command+4 | Selected text URL 2 | ||
| Command+5 | Selected text URL 3 | ||
| Command+6 | Check spelling | ||
| Opt+Command+6 [Mac] Shift+Command+6 [Win] | Find Next Misspelling | ||
| Opt+Command+Shift+6 | Add to dictionary | Key is disabled by default on Windows | |
| Command+7 | Selected text URL 4 | ||
| Command+8 | Selected text URL 5 | ||
| Command+9 | Selected text URL 6 | ||
| Command+- | Send Queued messaged | ||
| Command+= | Enter selection in find window | ||
| Command+' | Remove quote level | Selected text is unselected after operation. No menu item. | |
| Command+Shift+' | Add quote level | Selected text is unselected after operation. No menu item. | |
| Command+, | Finish address book entry | ||
| Command+[ | Lower message priority | ||
| Command+] | Raise message priority | ||
| Command+A | Select All | ||
| Command+B | Make text bold | ||
| Command+C | Copy | ||
| Command+D | Delete | ||
| Command+E | Send Immediately | ||
| Command+F | Find | ||
| Option+Command+F | Search | ||
| Command+F | Find again | ||
| Command+H | Attach document | ||
| Command+I | Make text italic | ||
| Command+J | Mark as junk | ||
| Option+Command+J | Mark as not junk | ||
| Command+K | Create address book entry | ||
| Command+L | Address book | ||
| Command+M | Check mail | ||
| Command+N | New message | ||
| Command+O | Open file | ||
| Command+P | |||
| Command+Q | Quit | ||
| Command+R | Reply | ||
| Command+S | Save | ||
| Command+T | Make selected text plain | ||
| Command+U | Underline text | ||
| Command+V | Paste | ||
| Command+W | Close window | ||
| Command+X | Cut | ||
| Command+Y [Eudora] | Directory Services | Cannot be supported with this key as it is mapped to Redo | |
| Command+Y | Redo | Seems to not work reliably for core mozilla code. Not an extension issue. | |
| Command+Z | Undo | ||
| F3 | Find again | 
(Feel free to add more)