Sending Holiday Cards Dilemma

 Years ago when I first was deciding to be identified as a Druid for my religious affiliation, I had a conversation about what is appropriate when sending holiday cards...if you know a person is Pagan, do you send them 'Happy Solstice' or 'Merry Yule' cards in acknowledgement of their religion, or send a Christmas card to acknowledge your own? 

I, at that point, had actually been sending out 'Happy Solstice' cards to my family in acknowledgement of my own religious belief..but the consensus of that discussion with that group of people was that you send the greetings acknowledging the religion of the receiver of the card, not the religion of the sender, to be socially correct, or compassionate, whichever. 

And of course there is the more neutral 'Seasons Greetings' type card if you don't know or don't wish to assume which religion the person follows. However, that manages to alienate Muslims since Muslims have no religious holiday in December at all, according to my Muslim friend in Algeria. 

Its complex, right?