How many days in advance is it appropriate to send invitations to leading friends when getting married and having a wedding? How come? Did you send it yourself?
Important leaders and relatives must deliver them in person, and three days in advance is enough. For others, I suggest calling for invitations first, and then telling them to mail them or ask friends to deliver them on their behalf. I suggest that it is better to ask a friend to help deliver it. If friends don't have time, mailing is also good.