If there's similarity, then I didn't explain it well, in which case I apologize.
This situation is completely different from the other thread in that I can view the message, but when I try to reply to the email, the aforementioned pop-up message shows, which prevents me from completing the reply (and I agree with you, "forever's" not useful here
).
Consequently, I either back out of the message or the app all together and return later to reply.