I was chatting the other evening with iPhone developer Bryan Henry, who was busy putting the finishing touches on some mailto: code in his latest application. Although you might be tempted to use ...

Now, if you click a mailto: link—try the tips link on Lifehacker's sidebar—Firefox 3 will ask which application you want to use. Choose Gmail, and select "Remember my choice for mailto links ...

But the Mailto: extension is really the simplest to use: click to install, then select from one of the five webmail services—Fastmail, Gmail, Hotmail/Windows Live Mail, Yahoo mail, or Zoho mail.