I use mutt to read email in a remote terminal window. I'd still like to be able to click on an e-mail link in a browser and send an e-mail directly. Sure, I could copy/paste it. However, one application I use also usually passes a subject and body through the link.
That would be a pain in the ass to copy and paste.
Here's my solution: I'm using the mozex plugin for Mozilla on my Linux desktop.
With that installed, I can set the mailer command of my choice. I use this:
xterm -e ssh -t mark@myserver mutt 'mailto:%A?subject=%S&cc=%C&body=%B'
For icing, I share SSH keys with the server. With ssh-agent in play, I don't even have to enter a password. Mutt just pops right up.
But there's just one drawback. The link I want to follow comes through a submit button rather than an anchor tag, and that doesn't appear to be supported yet. Sigh.
Oh well. The other feature of mozex that makes it worthwhile for me is that it allows me to edit textareas in the text editor my choice, making it super comfy to make journal entries like this.