[@MR.Jacks]
Hello,
1) The address for receiving e-mail is a serial number that can not be changed.If you have a program installed on a flash drive, you can format it, and then the serial number will be different.System Reinstallation also changes the the serial number. But for the new serial number you will need a new registration key. We can give it for free, if program will be installed on the same computer or flash drive. To identify a computer or flash drive you will need to send us files of the screenshot of the registration window.
2) The ability to work through a proxy server will appear in future versions