I’m not sure how often I’d use it, but I could imagine this tool could be very useful for people with difficulties typing. WaxMail adds a button in Outlook that will allow you to record a voice reply to emails you receive, and send them seamlessly as an MP3 attachment. The creators of WaxMail are also the people behind Skylook, a Skype integration package for Outlook. WaxMail is a free Windows utility.