[Taylor]

If you want to say Merry Christmas, say Merry Christmas.
If you want to say Happy Holidays, say Happy Holidays.
If you want to wish a festive ChristmaHannuFestiKwanzaaKah, do that.

People appreciate the personal touch of receiving good cheer in the mail. Don't concern yourself with offending others with your belief system - we all signed up for this wonderful tradition. Personally, I'm excited to see the diversity of all my friendswithrobots.