system
A chat on subreddit /r/NoStupidQuestions
human
They just have normal email addresses, so you can do this with any mail client, but I wouldn't recommend it. Petition *your* congressperson and governor. Other ones *do not work for you.*
gpt
Plus you spamming hundreds of .gov addresses at once may get your email address blocked by that mail service if they have those kind of anti-spam rules in place.