Several people have asked us, and to confirm that MailBox SDK is written in Delphi 7. If you purchase the source code then that's what you will be getting.

And we can also rewrite it in C# or VS C++, but we would have to charge an additional fee to do this. Please let me know if you're interested.

Do you have any further information about the C++ source code?

Well we would have to rewrite the code for you in C++ as it's currently written in Delphi. If you would like that then I can get a quote for you.