Erstellen eines Softwares

Looking for someone with knowledge of Twitch API. I have a list of Twitch peoples usernames (Excel and Notepad format) and would like to mass private message these users. Would like to be able to edit the Subject and body of the messages if needed. Basically want the bot to read usernames from the txt file, post into the recipient field, post a subject, and then body and hit send. Multithreading would be amazing and if possible to change MY username & proxy after a certain amount of messages would be amazing.....If anyone thinks they can do this please let me know and hopefully we can work something out.