You are correct that you only sent me one PM three days ago. The original construct of that sentence referred to the fact that you presumably sent similar emails to others, hence the plural. When I edited the reference to others out of the sentence, I should have reduced the PMs to singular.
So how many other people did you send your "Goodbye" email to? It wasn't enough to make an exit announcement on the forum, you also had to email others with your self justification, and to try to persuade them to leave as well by singing the praises of another forum.
You really think that's leaving quietly?!