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Most likely they get IP addresses from vendors that partner with popular tools like Saleforce and the like. I wouldn't be surprised if Google or Facebook log an
by soheil 5y ago
Most likely they get IP addresses from vendors that partner with popular tools like Saleforce and the like. I wouldn't be surprised if Google or Facebook log and sell/give away/leak the IP address linked to a logged in user's email to a third party vendor or ad network. There are also numeric Chrome extensions or other tools that once integrated with a client's browser could track their email and IP address. Once you have a known email/IP address pair it's simple to associate it with a company.
- hennief 5y agoThis makes a lot of sense. Clearbit itself also has a Chrome Extension that lives in your Gmail and has over 200.000 installations. If they track the IP of anyone who opens one of their users emails, they should have huge coverage. Do you think this is their source of data? (Clearbit extension: https://chrome.google.com/webstore/detail/clearbit-connect-supercha/pmnhcgfcafcnkbengdcanjablaabjplo https://chrome.google.com/webstore/detail/clearbit-connect-s...)