Is it bad to send someone a save the date but not an invitation?

Sending a save the date sets an expectation. The person receiving it will start planning, booking time off work, arranging childcare, and maybe even booking travel and accommodation. If the invitation never arrives, they are left confused and upset. It can feel like a deliberate rejection, even if that was never your intention. There are times when guest lists change, for example if a venue becomes too small or a budget is cut. If that happens, you must contact the person directly, as soon as you know, and explain honestly. Apologise and make clear it is not their fault. Do not let them find out through social media or from another guest. For most couples, the best approach is to only send save the dates to people you are absolutely certain will be invited. If you are unsure about numbers, wait until your venue and budget are confirmed. If you need to reduce your list later, do it before save the dates go out, not after. If you have already sent them and must uninvite someone, a phone call is far better than a text or email. Be kind, be direct, and give them time to adjust their plans. It is an uncomfortable conversation, but it is the respectful one.