Send By Mail is a Lightroom plug-in that allows you to automatically create new messages in Apple Mail including photos from your Lightroom catalog as attachments.
Send By Mail is free and available under the BSD license.
Send By Mail 1.0 requires Lightroom 1.3 or later, Mac OS X 10.4 or later, and the Apple Mail application. It won’t work on Windows.
Once installed, Send By Mail allows you to directly export your photos in a new e-mail from the “File” menu in Lightroom:

Send By Mail also allows to configure the photos in the export interface before exporting them in a new e-mail. The plug-in comes with presets for the usual photo sizes:

Once the photos have been exported, a new e-mail is created in Apple Mail with the photos attached. All you have to do then is to send the e-mail:
