Is it proper etiquette to respond to every greeting card?

You do not have to respond to a greeting card, though it might be nice. However, the exception to that is Christmas or holiday season greeting cards. It is generally considered good form to send a card to anyone who sends one to you. If it is your birthday, a wedding, the birth of a child, the funeral of a loved one or some other occasion that merits thank you cards, you should send a thank you card or note even to people who only sent a card or best wishes, as that may have been all they were able to do at that time.

Birthday Card Etiquette

No response is required, imagine thanking 80 plus people? You usually send greeting cards to them so it's reciprocated.

No response is required for holiday greeting cards.

I save all my enjoying cards for a 300 and sixty 5 days to make confident, working example, I deliver them a card returned at right here Christmas. Then I toss them. the only enjoying cards I even have been protecting are those from my son.

No response is required although you may want to add them to you holiday mailing list (completely optional).

Did you get it for Christmas?

I would send him a sympathy card on the passing of his senses.

completely optional.... but it is a nice thing to do