Houston Natural Gas merged with InterNorth in 1985 to form Enron, a regional gas pipeline company. Kenneth Lay ran it from day one and pushed the company into energy trading: buying and selling contracts for gas, electricity, weather derivatives, and broadband capacity. The bet paid off spectacularly. By 2000 Enron was the seventh-largest company in the United States by revenue, employed roughly 29,000 people worldwide, and had been named Fortune's Most Innovative Company in America six years running; its stock traded above $90 a share that August. None of that growth was what it looked like. CFO Andrew Fastow funded much of it with debt Enron kept off its own books, using private partnerships named LJM and the Raptors, structures accountants call special purpose entities, to book losses as profit instead of debt. The scheme collapsed in October 2001: Enron restated its earnings, erased $1.2 billion in shareholder equity, and its stock fell from $90 to under a dollar within weeks. It filed the largest corporate bankruptcy in U.S. history that December, wiping out $74 billion in shareholder value and the retirement savings of thousands of employees who held company stock in their 401(k) plans. Congress answered the next year with the Sarbanes–Oxley Act, the most sweeping reform of corporate accounting and disclosure law since the 1930s: it created a new board to police auditors, forced CEOs and CFOs to personally certify their own financial statements, and reshaped how every public company in America reports its books to this day.

The fraud drew two separate federal investigations. The Securities and Exchange Commission and the Justice Department went after the accounting itself, while the Federal Energy Regulatory Commission (FERC) was chasing something else entirely: Enron's role in the 2000 to 2001 California electricity crisis, where traders used strategies nicknamed Death Star, Fat Boy, and Ricochet to manipulate power prices and profit from rolling blackouts. FERC's probe is why this dataset exists. Investigators subpoenaed and later released the email archives of 150 employees, mostly executives and traders, as public record. Enron employed about 29,000 people; the other 28,850 addresses in this corpus appear only because they exchanged mail with one of those 150, not because they had a mailbox of their own. An @enron.com address here does not guarantee a browseable inbox: only the 150 archived employees have one. Carnegie Mellon University's William Cohen later cleaned up the original release, which had scrambled folder structures and duplicate messages, and republished it as the version most researchers use today.

This site puts that corpus in front of you directly. Use the file explorer to browse by name and folder, or search across all 517,401 emails at once. Open the Graph tab to see who emailed whom across the whole company: each dot is a node, one email address, and a line between two nodes means they exchanged mail; bigger dots have more distinct connections, not just more email volume. Red nodes are the 150 archived employees, green nodes are everyone else, from other Enron staff to outside banks, law firms, and regulators. The graph only draws roughly 1,500 of the busiest nodes at a time rather than all 79,894 addresses in the corpus, so plenty of real correspondents never show up as a green dot. Zoom in and node names appear once you are close enough to read them. Click any node to open that person's mailbox, the same view the file explorer reaches. The layout settles on its own, pulling frequent correspondents together and pushing strangers apart, so clusters in the graph roughly trace real working relationships. The code for this site is open source and mirrored on GitHub, where you'll also find a more detailed write-up. Found a bug or have a question? Email maintainer@enroncorp.us.