If you'd like to help support the future development of simpleContact Pro (and be among the first people to get updates and new features), then please contact me to join my group of beta testers.
There are only two requirements:
1) You must be a simpleContact Pro license holder (single domain or developer).
2) You understand that beta builds are likely to have bugs and accept full responsibility for any consequences of using a beta build on a live website.
I'll even offer a little incentive :) If you become a beta tester and help to identify a problem with a beta build, I will upgrade your license to developer status.