[devit]

The document uses a monospace font, and the redacted name can be seen to be 10 characters long.

Based on the 2019 Fortune 500 list, that gives these possible candidates: Activision, Alaska Air, Albertsons, Altice USA, Amazon.com, Ameriprise, AutoNation, BB&T Corp., Bed Bath &, Blackstone, Booz Allen, BorgWarner, Burlington, CBRE Group, Chesapeake, CMS Energy, CVS Health, Dean Foods, DTE Energy, Enterprise, Eversource, Expeditors, Fannie Mae, First Data, Ford Motor, Home Depot, Huntington, JM Smucker, Jones Lang, Laboratory, Mastercard, McDonald's, Murphy USA, Nationwide, News Corp., NGL Energy, NRG Energy, Occidental, PBF Energy, Prudential, PulteGroup, S&P Global, State Farm, Unum Group, US Bancorp, WEC Energy, Windstream, World Fuel, WR Berkley, Yum Brands

[aerovistae]

"In the picture version of the email I padded the name fields to better anonymize the sender, and in the text below I replaced them with NNNN."

[Miner49er]

From the article: "The email comes from a fortune-500 multi-billion dollar company that apparently might be using a product that contains my code, or maybe they have customers who do. Who knows?"

The "or maybe they have customers who do" makes me think that this company must provide services to other companies, so probably not a Mcdonald's or Albertson's or something like that.

[merb]

McDonalds provides services to other companies? that's the whole point of McDonalds?

[knob]

This analysis is beautiful. Thank you for doing the math! :-)