DS2 is 7 on Sunday. Invited 15 friends from his class to his party. I sent an email invitation about 3 weeks ago to all the parents and most replied straight away saying yes, one or two declined. DS2 handed out paper invitations about 10 days ago to his friends and I then sent a chaser email on Monday saying if you haven't replied, please let me know if you can come. There are still 3 people I haven't heard from. One I spoke to this morning who can't come, the other I know doesn't use email that much and is often unresponsive but with the third I am completely mystified as to why they haven't responded. Both parents were copied on the two emails I sent and I know that the mum is still using that email account as she replied to another group email from that account the same day! I also saw her child hand her the paper invite in the classroom and saw her read it. I don't mind either way if her child comes or not but just think it's really rude to not respond either way. We have been quite friendly over the last 4 years, often speak and the children have attended each others parties in the past including last year although they are not close friends. I have put this child down as "not coming" but really feel like making a comment in passing about it being polite to respond to an invitation. I also feel a bit hurt for DS2.