Still, the keyboard is probably even faster. But if you have tried pressing Command-S, you have probably discovered what all others who thought this was the most intuitive shortcut for sending had to find: Command-S saves the message as a draft but does not send it.
In a way, this is good news, because you are more likely to accidentally save (no problem) an unfinished message than you are to deliver it. And if you think "deliver" instead of "send", you are on the way to Mail's keyboard shortcut for sending a message.
Send a Message with the Keyboard in Mac OS X Mail
To send an email off with a keyboard shortcut in Mac OS X Mail:
- Press Command-Shift-D (think deliver) when you are ready to send.

