Connect is a free Gmail extension that allows you to search for contacts based on domain or company name directly from your email. We offer 100 free lookups per month per user. A premium service is available at $6k a year for 1000 look-ups per month, that can be divided between up to five seats.
You can install Connect by adding the Chrome extension found here.
If you're looking for Clearbit Connect for Microsoft Outlook, unfortunately we no longer offer this extension.