- 1. Download and install postmanhttps://www.getpostman.com/Version:the version I download is Postman-win32-5.0.0-Setup.exe.Note:Some versions of postman does not support https.Install postman, and s... 1. Download and install postmanhttps://www.getpostman.com/Version:the version I download is Postman-win32-5.0.0-Setup.exe.Note:Some versions of postman does not support https.Install postman, and s...