I don't want to sound too aggressive here, but I am pretty annoyed that you copy pasted the same paragraph to every single person who played your game jam game. I think this was very presumptuous of you. I can understand you sending this to the people who REALLY enjoyed your game and told you they would like to play more of them by you, but most people, including me, didn't do that. A game jam is just for fun and definitely should not be used as a marketing opportunity for your next big project. You can try to build a community if you really want to, but don't force people into it. "And I want everyone ... to give it a wishlist and watch the trailer" isn't forcing people, but its pretty close in my opinion. At the very least, you could've politely asked people rather than stating it very matter-of-factly.
If you really need to market your game that badly, make a reddit post or something, idk dude; anything would be better than what you decided to do this time.