Facebook and Twitter are fabulous tools for mass communication, and if you’ve set up a wedding page for your event posting a cancellation notice there is fine. But you also need to reach out to your guests individually as a sign of respect. Also, not everyone is constantly logged into Facebook or Twitter so you need to make sure they get the message.
“A Facebook announcement is just too impersonal for people who are spending a lot of money to come to your wedding,” says Post. That’s not to say you have to take on the Herculean task of contacting everyone yourself. Enlist your bridesmaids and your parents to help contact guests on your behalf (as well as your wedding vendors). And while you ought to call your closest friends and family, personal emails are an acceptable way to get the key message out without getting trapped in potentially painful conversations you’re not ready to have. As to his side of the guest list, your fiancé should contact them himself.