Soon email clients will be detecting GPT generated content and show warnings.
Gmail also offers to compose your entire response as long as you keep it brief (Smart Reply).
Edit: I typed a few sentences I made up myself and it judged them >90% fake. I don't think it works very well.
Three full, generated, job related letters were detected as 99% fake. One was falsely detected as 99% real.
That's the next level of hell: customer service rejects your request because it believes an AI wrote it (even though you wrote it yourself).
Coming soon to BigCorp.