MailAccess: Open-Source Email OSINT Tool Maps Accounts Behind a Single Address

What MailAccess Does

MailAccess is an open-source email OSINT tool and email scraper that promises one email in and every account behind it. The engine runs 75 modules across more than 5,300 platforms and requires no API keys. The project reports 43,550+ installs.

How Results Are Presented

Each address returns a single identity graph, with hits connected to the person and scored only on corroborated evidence. Results include an exposure score, findings, and breaches. Every finding shows its source, its confidence level, and one sentence of reasoning. In the project's example, the address [email protected] links to the GitHub account github.com/jane_doe, sourced from github_api, user_scanner, and gravatar, with high confidence based on the username jane_doe appearing on 11 platforms and an avatar hash match.

Email Scraper and Pricing

The email scraper takes one domain and returns every email at the company. The project advertises at least 150,000 business contacts a month for $5.

Open Source and Self-Hosted

The engine is free and MIT licensed, with unlimited use on your own machine and nothing leaving your network. The repository KatrielMoses/MailAccess has 1.6k stars on GitHub. Installation runs through pip install mailaccess, currently version 0.18.1, followed by the command mailaccess investigate [email protected]. The launch film was made with Claude Opus 5.5 and HyperFrames. The project recommends running the tool on your own email first to see what it does.

Sources: mailaccess.pro