"To personalize the message" means to make the message specific and relevant to a particular individual or group, taking into account their unique characteristics, interests, or needs. Full definition
Kids can practice motor skills by cutting paper with scissors and writing their letters to decorate the cards with personalized messages. (mommyscene.com)
At free online dating website, send personalized messages while expressing interest. (fsat.ru)
You can also use a fine point permanent marker to write out your own personalized messages on the blank page within the file. (simplisticallyliving.com)