Magic Mail Folder is one of the fastest way to send emails. It turns any folder on your desktop into an email-sending-box. You just have to give your freshly created folder(s) the name of an email address (like myFriend@hotmail.com) and it will be recognized.
Simply drag files in it and they will be sent.
MMF works as a daemon. Here’s a demo.
And here’s a speed test : MMF Vs Mail
NEW: The possibility to add a descriptive text to your file: See this how-to
Note that MMF is still in a beta-test stage. Please report any bugs. Thank you !

What’s new:

Version 1.0b6:

• Correct a bug that happens sometimes when sending a folder.
• Correct the famous “Check your internet connection” bug. Hopefully for everyone !

Version 1.0b5: Correct the “can’t save preferences” issue that some people had.
Version 1.0b4:

• You can now email RTFD files.
• You can now email folders (they are zipped on the fly).
• The entire code has been cleaned.

Version 1.0b3:

• A tiny bug has been removed.
• Now the folders are checked every minute.

Version 1.0b2: Possibility to add a descriptive text (requested by user).

Website
Download Magic Mail Folder