I use mail-merge in Word to send out my Xmas cards using an .xls list to create labels. It can generate the whole list, or a whole page of just one address
(return address label). Sometimes it can get confusing, especially if you want to customize the labels' fonts and sizes, italics, bold, etc. It usually screws up in formatting and I have to do it more than once. But I forget from one year to the next, since I don't use it that often.