It isn't much. I had the letter folded so that the text is on the outside, so when you pull it from the envelope you see the headline. The headline is in Red, so you can kind of see it through the paper.
On the front, you can see text from the letter.
I am wondering, do you think this will make people more likely to throw it away?
Do you think it will make people curious and open it? I know people can't resist an unanswered question. Partially seeing the text might just force them to open it.
I am printing the envelopes on my inkjet, so it looks less professional and more like a personal letter. I am also using stamps and my personal name on the return address.