I'm getting married on August 4th and I've sent out invitations. I haven't received any back and some people have let me know that they received them but there are others that I haven't heard anything from nor have I gotten any back. We aren't serving a meal so we didn't include an rsvp so they haven't replies to me. Do I need to go through the list and email/call to check to see if they got the invitation or do I just leave it alone?