Friend of AFA
Thanks! I'm new to this. I've been using the trifold and didn't know if there was a better way. I didn't see this post before I submitted my first two mailings, so didn't know about the cardboard strip thing, I'll do that next time!I don't have a great answer for you here; I think the tri-fold is usually what I see regarding envelopes. You can try and run the flat end of a knife over the crease and I do think having a strip of cardboard helps to give the envelope some form, which can help a little with the bulkiness. The cardboard strip can also be reused by the host when they send cards back to you.
Hope that helps.