The entire song is based around fake email exchanges between late Connor Murphy and the main protagonist Evan Hansen, all written by the latter and his "family friend" Jared Kleinman.
The song is reprised at the start of Act 2 by all three characters, but is interrupted by Evan mid-chorus when he realizes that the email exchanges are becoming unrealistic.
[4] Conversely, in a review for RogerEbert.com of the 2021 film adaptation, Robert Daniels noted how "Sincerely, Me," alongside other songs in Dear Evan Hansen penned by Pasek and Paul, was a "garish arrangement" with "lyrics that ring with the artificial tinge of a plastic lollipop.
"Sincerely, Me" was featured in Universal Pictures' 2021 film adaptation of the musical, starring Ben Platt, who reprised his performance in the titular role and was sung by him, Colton Ryan as Connor Murphy and Nik Dodani as Jared Kalwani (changed from Kleinman to accommodate Dodani's casting).
The film, which premiered at the 2021 Toronto International Film Festival on September 9, 2021,[8] followed by a theatrical release on September 24, 2021, is directed by Stephen Chbosky from a screenplay by Levenson, who also serves as an executive producer with Michael Bederman, Pasek & Paul and the show's lead producer Stacey Mindich.