So I simply could not convince my FI that proper RSVP cards were better than online RSVPs. He didn't see the point in spending the extra money for cards, envelopes, postage, etc. It wasn't a hill I was willing to die on, so invites went out with online RSVPs (through wedding website, but we included my email and phone number as options) on Tuesday. I have already received an email RSVP and had to email back regarding their dinner selections. I instantly regretted going the online route, but can't do anything about it now obviously. It may be silly, but I think it would have been more exciting to get the responses by mail and honestly, I think we are going to get a slower response and probably fewer responses than we would have if we had used cards. I keep having people tell me that they got our invite, but they did not immediately go to the website and RSVP whereas I think most would have filled out the card and mailed it back if they were sure they could come. I'm just kind of sad that I compromised on this.