TEARDOWN 94 · REVIEWED 2026-08-20
RocketReach
RocketReach finds and verifies work and personal email addresses plus phone numbers for professionals, searchable by name, company, or LinkedIn profile, drawing on a claimed database of 700 million people and 60 million companies. It also sells that same data as a standalone Contact Data API and offers a browser extension that looks up whoever's profile you're currently viewing.
RocketReach's own privacy policy describes its search technology scanning the public web to build a 700-million-profile, 60-million-company database it also sells through a separate Contact Data API — the same kind of standing crawl-and-index infrastructure behind Hunter.io, not a lookup an API call can fake.
What you lose building it yourself
- ✕A 700M-profile, 60M-company index instead of one-off lookups
- ✕Verified phone numbers alongside emails, checked in real time
- ✕A browser extension that looks up any profile you're viewing
- ✕Bulk exports and CRM integrations (Salesforce, HubSpot, and others) in one product
BUILD YOUR OWN · NOT OFFERED
Matching RocketReach's core lookup means running your own web-scanning search technology across hundreds of millions of profiles — or paying to license that scale from a data broker — and keeping it current, standing infrastructure, not a script that calls an API once. Entries with a real DIY path get a stack and a prompt here instead; this one doesn't have one.
Similar tools
Free alternative: theHarvester — an actively maintained, free open-source tool that harvests emails, subdomains, and names from public web sources, but has no phone-number lookup, real-time verification, or anywhere near RocketReach's claimed 700-million-profile scale.
Vendor's own claim
"Our search technology scans the web and collects publicly available information from third party websites, such as, social media sites, corporate websites and public records."
https://rocketreach.co/privacy · RETRIEVED 2026-08-20
QUESTIONS
Does RocketReach crawl the web itself, or buy its data?
Both, by its own account — its privacy policy describes its own search technology scanning the public web, and separately states it also buys or licenses records from third-party data brokers, people directories, and business partners.
How does the RocketReach browser extension work?
It looks up contact and company information for whatever profile page you're currently viewing, in real time, pulling from the same underlying database as the main product.
Is there a free way to find similar contact data?
theHarvester is a free, open-source tool that can pull emails and subdomains from public sources, but it has no phone-number lookup, real-time verification, or anything close to RocketReach's claimed scale.