Update (2012-07-25): Matt Milano:
As lead developer, I have actually been privileged to have two parallel careers, sometimes complimentary and sometimes at odds. Recently, I was on sabbatical for a couple of months to have surgery on an old sports injury I had been putting off having fixed for a long time. During that time, I increasingly came to the realization that I simply don’t want to develop software anymore. I have been involved in this business for 13 years. While it’s been an awesome ride, and I’ve accomplished some significant things in that time, I have found that I enjoy my secondary career far more of late.
He’s found another company to take over development of MailForge.