"Direct Mail" is a term that usually means physical mail. This is similar enough to cause confusion, and I had to do a second-take on your home page.
Hi All,<p>We just released version 4 of Direct Mail. The big new features include cloud syncing/collaboration, autoresponders, and a redesign for OS X Yosemite. Companion app for iOS also available at <a href="http://directmailmac.com/stamps" rel="nofollow">http://directmailmac.com/stamps</a>.<p>Happy to take any questions or feedback. Thanks!