Short answer: fetch the company's homepage plus its contact, about and imprint pages (respecting robots.txt ), extract mailto: / tel: links, JSON-LD Organization data, obfuscated emails and social links, then validate the emails' domain for MX records. The Fairquery Website Contact & Company Enricher does all of that per domain and returns one clean row (role emails, E.164 phones, socials, company name, description, address) for $3.00 per 1,000 domains (plus a start fee of $0.05 per 1,000 runs); unreachable, blocked or invalid domains are free.
What you get per domain
Business emails , validated with the same code as the Fairquery Email Validator : syntax, DNS MX / null MX, disposable list, free-provider and typo checks (no SMTP probing). By default only role/generic inboxes ( info@ , sales@ , hello@ ) are returned.
Phone numbers normalised to E.164, with the page they came from.
Social profiles : company LinkedIn, X/Twitter, GitHub, Facebook, Instagram, YouTube, TikTok and so on.…