Multiple email validator software made in Python according to the website https://pt.infobyip.com/verifyemailaccount.php

I'll be as direct as possible: I need a system made in Python or C# that can validate multiple emails according to the website Multiple email validator software made in Python according to the website https://pt.infobyip.com/verifyemailaccount .php. This site is valid only one. I would like it to be possible to import a txt or Excel or CSV file in which the software validates whether the email exists or not according to the website above. There must also be a textbox to validate only 1 email. When carrying out the process, there would have to be two buttons, one to export invalid emails and another on the right to export only valid emails. I also need to have license management, if it is in Python, host license control at pythonanywhere.com