Saani Kaayidham received positive reviews from critics and audience. M Suganth of
The Times of India rated the film 3/5 stars and wrote "It is ultimately the performances of Keerthi Suresh, who is terrific as the revenge-obsessed Ponni and Selvaraghavan, who superbly turns Sangayya into the film's beating heart, that hold the film aloft and prevent it from sinking into a mindless violent movie". Ashameera Aiyappan of
Firstpost rated the film 3/5 stars and wrote "Saani Kaayidham is a solid revenge drama that achieves its humble aspirations". Janani K of
India Today rated the film 3/5 stars and wrote "Saani Kaayidham is a neat revenge thriller which lacks depth in writing. If only Arun added more punch to the story, the film could have been flawless". Latha Srinivasan wrote in
Moneycontrol that “Saani Kaayidam' rests firmly on the shoulders of Keerthy Suresh and Selvaraghavan, and works to a great extent only because of them.” Haricharan Pudipeddi of
Hindustan Times stated "The film pushes Keerthy Suresh out of her comfort zone while Selvaraghavan contributes in not making the film end up as a blood-soaked tale of vengeance". Bharathy Singaravel of
The News Minute wrote "Filmmakers need to stop, just simply stop using sexual violence as a cinematic prop. Normally, in Tamil films, a woman’s life is “over” after she has been sexually assaulted. Saani Khaayidham tries to deviate from that, but ends up reinforcing another trope - that a woman, who is otherwise primarily the wife, daughter, or mother, needs to go through something as traumatic as a sexual assault to become “stronger”. Srivatsan S of
The Hindu wrote "Filmmaker Arun Matheswaran’s second instalment in what he calls his ‘revenge trilogy’ is gory and disturbing. Like the director’s previous film, it has a few auteur touches here too, and yet, there are a few issues". However,
Dinamani gave a mixed review and noted that the work of many people can be seen in the way
Saani Kaayidham was created. But what would the film have been if all this work had been accompanied by an interesting, mind-blowing story, emotional and innovative scenes!".
ABP Nadu gave 3/5 stars and noted that apart from the shortcoming that all the pages written in Sanikakitham are in blood,
Saani Kaayidham is a ‛blood' bond story that travels with relationship and story.
Dinamalar critic gave a mixed review saying it takes courage to see not one but two people who ruined his life take such murderous revenge. Only such people can watch this movie. Make sure children don't watch anything at home, and gave 2.5/5 stars. ==References==