[2] Hawkins based the lead character on his college roommate, a smart man with Aspergers whose behavior was mocked by other students.

[4] The two writers chose to work with Isaac Goodhart, who had won Top Cow's annual talent hunt contest in 2014, because of his artistic style.

[5][10] Digital copies of the first issue were temporarily available for free as part of the In-Store Convention Kick-off event held in March 2016, then again in September 2016 when the television adaptation for Hulu was announced.

[14][15] Following the conclusion of Eden's Fall, subsequent issues of each series included an icon indicating they were part of the "Eden-verse".

Hawkins and Hill started developing the second volume in early 2018, and were looking to release next year, while looking for a new artist for the series, as Isaac Goodhart was not expected to return.

As orders for individual issues declined, sales of the collections were consistent and growing in the book market and for online retailers like Amazon.

[14][15] The first issue of the second volume of the series was released in July 2019, titled Postal: Deliverance, with Raffaele Ienco as the new artist.

[16] In the early 1970s,[17] criminals Isaac and Laura Shiffron help FBI agent Jon Schultz hide five million dollars in gold bars he stole from a crime scene.

In exchange, Schultz agrees to use his position of power to prevent outside authorities from investigating anything in the small town of Eden, Wyoming.

[18] Isaac and Laura turn Eden into a safe haven for convicts who live by their strict laws and religious ideals.

[21] He also starts to openly pursue Maggie, who explains that she was a leader in a heroin running gang in Los Angeles before being caught and sent to Eden.

[24] Shortly after arriving in Eden, Molly murders two people and Laura is unable to explain why she is not punished because most of the town is unaware of her arrangement with Schultz.

[31] In Postal: Deliverance, Mark and Maggie struggle with their respective roles as mayor and sheriff of Eden while also trying to raise a child.

[35] Graphic Policy praised the writers for "making characters that are easily to empathize with from the get go" and felt that there was  "very little wrong with this first issue, and is one of the strongest lead-ins to a new story that the medium has seen in a while.

[38] The characters were also praised by Rawdin, although Mark's portrayal was described as "borderline stereotypical" in Sam Graven's review for Big Comic Page.

"[39] However, David Brooke of AIPT described the series as possessing "a very strong protagonist" and  "a premise that holds a lot of potential in what is turning out to be an addictive mystery.

"[40] Bob Bretall of Comic Spectrum acknowledged that "this book isn't going to be everyone's cup of tea" but still recommended it as "a solid read with a lot of well-written and very unique characters.

"[41] Aaron Halverson of Comic Bastards praised the writing as "phenomenal" and complimented the series for turning a genre associated with mindless violence into "something smart and interesting.

[43] Daniel Gehen told readers that Postal explored "religious extremism, hate crimes, and redemption" among other concepts in a review for Comics Bulletin.

[44] The observations align with Hill's stated intention to model Eden's morality after that found in the Old Testament, which he feels would be horrifying to modern society.

[47][48] Although Rea found the climactic battle in Issue 24 to be too brief and too convenient to be satisfying, he praised the comic's finale as "shocking and heart wrenching" and the overall narrative as "compelling."

Goodhart was noted for his artistic improvement over the course of the series in Nick Nafpliotis' review for Adventures in Poor Taste, who described issue 25 as his best work yet.

[49] Michael Mazzacane agreed in a review for Multiversity Comics, saying that Goodhart's panel layouts did a good job of controlling the narrative pace.