Mammootty and Vinayakan, stars of Kalamkaval, released a short video thanking the audiences for the reception of the film. Kalamkaval, which was Jithin K Jose's directorial debut, was released on December 5.

In the statement Mammootty thanked the audiences for the film's success. The actor mentioned that their gratitude was for all the new and old artists who worked in front of the camera and behind the scenes of the film.

Though Vinayakan mentioned that he was speechless, he also revealed that he was happy. Mammootty ended the video by saying both of them will have a lot to say in their upcoming projects.

Earlier Mammootty posted a photo from the film on Instagram, and captioned it with a few lines of gratitude. "Last 2 days have been nothing short of overwhelming. I am truly blown away by the love Kalamkaval has been receiving since its release. Thank you for your trust in my choices."

Kalamkaval is centred around a series of murders committed in the areas surrounding the border of Kerala and Tamil Nadu. While Vinayakan plays a cop investigating the crimes, Mammootty remained playfully evasive about his character.

CE's review of the film reads, "Jithin’s earlier credit, Kurup (also based on a real criminal), for which he penned the story, was criticised for glorifying its protagonist. Perhaps for that reason, he seems more cautious here. Extra points for avoiding sexual violence while still delivering the required chills. He also sidesteps the overused trope of elaborate flashbacks or origin-story monologues that risk humanising serial killers. Instead, a few photographs, accompanied by a chilling voiceover from a character who we expect to be at the other end of the spectrum, offer enough hints. Only then does the opening quote, “The venom beneath can’t be suppressed forever,” click into place."