Best way to seal lined envelopes?

Don't over think it. Lick it and move on. After going through the mail, those envelopes aren't as nice as they were when you mailed them. I printed our addresses on the back where your seal is. I talked to someone and they didn't even notice the address on the back. I am pretty sure people may see the lining but they will be paying more attention to the invite and information on it.

Mine come with an adhesive strip.

I got those cheap sponges on a stick from Michaels for 99 cents. No way I wanted to lick 60 envelopes. That and a little bit of water and I was done in no time. I had liners in my envelopes too and I'm sure the pretty liner got torn up when they were opened but not much you can do about that.

I think most people would not rip it like a bill, if they see its a wedding invite.

I’m having the same dilemma right now! Haha I’m thinking of just getting round envelope seal stickers, instead of licking the envelope shut. But I’m not sure if that will cause mailing problems... What did you end up doing?