[3] The album's production was handled by a range of accomplished producers including Einer Bankz, Mike Will Made It, Smash David, and Jason "Cheese" Goldberg—who also mixed and mastered the entire record.

[3][4] Sincerely, Kentrell received generally positive reviews from critics who highlighted the album's production and lyrical content.

[13] On April 19, 2021, Gaulden sent an email to his team while incarcerated, addressing his arrest, Williams, and the album:[14]i can leave my kids millions of dollars to divide but can't give them the time they truly deserve nobody understand me they never did shit some times i don't understand myself but that's fine because im okay i ain't looking for you to feel sorry I just ask for one thing- For you to let me suffer in peace tell MS. WENDY WILLIAM I say she got a good soul and she's a beautiful women I can see that threw all the bad comments thrown at her tell her count her blessings (STAY IN GOOD SPIRIT) Sincerely KentrellWhile incarcerated, the Never Broke Again label page previewed "Still Waiting", a track recorded over a jail phone.

[29][30] After gaining traction online for months due to the track being previously leaked, "Nevada" was released as the album's third single on July 7, 2021.

He also cites that "YoungBoy raps through a thick Louisiana drawl, the battle between betrayal and loyalty takes center stage."

He concludes his review by stating "Sincerely, Kentrell is YoungBoy at his most vulnerable and vengeful, worn down by his own paranoia, some justified and some fabricated.

"[37] Alphonse Pierre from Pitchfork states that "He has blurred the lines between his rap persona and lived reality, which makes it an uncomfortable, but sometimes remarkable listen."

Concluding his review, he explains that "While it carries the same flaws as his previous work, the latest album from the Baton Rouge rapper provides a clear portrait of a tragic figure who often blurs the lines between fact and fiction.

"[38] Will Dukes from Rolling Stone writes that "his style, a whimsical mix of Young Thug and fellow New Orleanian Little Wayne is heavy on melody, which he fuses with some rough-and-tumble grit."

Concluding his review, he writes that "the Baton Rouge, Louisiana-based rapper's third album is full of conviction and bruised passion.

"[39] Sincerely, Kentrell debuted at number one on the US Billboard 200 chart, earning 137,000 album-equivalent units (including 10,000 in pure sales) in its first week, according to MRC Data.