Scale to Mail is an AppleScript droplet that will resize an image and dump it into an email which it opens for you in Apple Mail.
Extract it to your desktop or place it in your Dock, drop the image on it, select the degree of reduction you want, and it goes to work, leaving you with a resized image in a fresh email. You can configure it to reduce by percentage or width, either chosen by you on the fly or pre-determined.
Perfect for those times when opening iPhoto or Photoshop is more trouble than it is worth. Scale to Mail is donation-ware and available from the developer’s website.
[...] When I first switched to Macs about two years, AppleScript wasn’t even on my horizon. Perhaps only Services are more neglected by switchers like me and normal users. Now I find that I am using AppleScripts more and more, both within Apple Mail (Mail Scripts, Hidden Mail, MultipleReply) and in order to integrate with Mail when I am in other apps (Feedmailer, Scale to Mail). Fastscripts helps me to do all that better. [...]
[...] It works well. I’ve been using the trial version for a few days, and it threatens to replace old favourites like Scale to Mail and ImageWell. [...]