I am a woman who is going to get married. How to send a message to a friend if you want to entertain guests?

I think if the woman is married, if relatives want to inform her to entertain these guests, I think we should send an invitation. If it's my relatives, especially my own individuals, plus my family or the wealth of my relatives, I think it's necessary to call and tell, or, well, the best and most polite way is to tell in person at home. This is more polite. And some classmates or ordinary friends and colleagues, I think it is ok to send invitations, because every colleague will feel very troublesome, and it will waste a lot of time to call directly, and sometimes feel isolated? My life is very fast now, and everyone has a lot to do. If the days are longer, many people may forget it. So if you send an invitation, you can also specify the time, especially. Well, I think it is very simple to send a sunny day, and it also saves a lot of polite words!