Christmas cards can contain short formal greetings such as "warmest holiday wishes to your family," or they can contain longer, more personal messages that include wishes for peace and joy during the holiday season. Personalized messages are appropriate for cards that are going to close friends, relatives or business associates.
Adding a personalized slant to a holiday card greeting can help make this writing process easier. For example, if the writer knows that the person to whom the card is addressed has a newborn baby, it is perfectly appropriate to add a message such as "best wishes for baby's first Christmas!" in with more generalized holiday greetings.