4 guides
Companies, founders and the email pattern they use
Company and founder data from the Y Combinator directory, and company email patterns inferred from public GitHub commits and checked against MX records — what each source states and what is inferred.
Stated vs inferred company data
Company data comes in three layers — what a source publishes, what can be derived from it, and what is constructed from a rule. Two Actors, and how each one labels which layer a value came from.
Scrape the YC companies list
Exporting YC companies, founders and jobs from the public directory: one row type per run, the 1,000-result ceiling and the batch split that gets past it, measured fill rates, and what a founder email candidate actually is.
Email format from GitHub commits
Every commit pairs an author's name with an address. How the Company Email Pattern Finder turns that into a company email format with a confidence score, how well it worked on 46 domains, and why it stops at the MX record.
Founder data, GDPR and CCPA
A founder's work address is personal data even when nobody published it and a pattern produced it. What the GDPR and CCPA texts say, what the two company-data Actors do by default, and what the platforms' own terms add.