A Mary Christmas received generally mixed or average reviews from critics. At
Metacritic, which assigns a
normalized rating out of 100 to reviews from mainstream publications, the album received an
average score of 49, based on five reviews. In his review for
Renowned for Sound, Josh Dixon remarked that with
A Mary Christmas "Blige has provided listeners with something unique and thoroughly pleasant. This album will undoubtedly remove any notions of stress you may feel about the holidays, and for that reason, along with its stunning instrumentation and impressive vocal range, it deserves to be recognized as a thoughtful and well-crafted holiday album." Tim Jonze from
The Guardian gave the album two stars, saying that it seemed very similar to a formula used by
The X Factor contestants of putting out Christmas albums. He applauded Blige's vocals, but specifically criticized her cover of "
Rudolph the Red-Nosed Reindeer," calling it "unlistenable." Eric Henderson of
Slant Magazine gave the album two and a half out of five stars, criticizing the album for not taking any risks, along with the kid-friendly songs included on the album. Randy Lewis of
The Los Angeles Times gave the album two stars, criticizing the album's overproduction, stating the production made the songs very overwhelming. Andy Gill from
The Independent felt that "one hardly looks to Mary J Blige for restraint, but here the combination with David Foster's orchestrations adds an extra layer of icing to an already sickly cake. Even when things start out sensitively, as with the twinkling celesta of "
My Favourite Things," they inevitably end up in a welter of soupy strings, with Blige seeking to import surplus emotion where none is required. Barbra Streisand, on "
When You Wish Upon a Star," is the best of her several duetters." == Commercial performance ==