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By Industry

We have broken down the list of the largest US companies into several industries below.  The lists below provide the corporate email address patterns for nearly 700 of the largest companies which are headquartered in the US.

You can go directly to a specific category by clicking on any of the following:
Aerospace & Defense
Business Services (includes accounting, advertising, media, public relations, staffing firms, etc)
Computer Services (includes computer manufacturers, and software)
Construction and Real Estate
Consumer Product Manufacturers
Consumer Services
Energy & Utilities
Financial Services (including Accounting, Banking, Insurance & REITS)
Healthcare & Pharma
Hospitality (includes Casinos, Cruise Lines, Hotel Groups, Rental Car, and National Restaurants chains)
Industrial Manufacturing (including Agriculture, Distribution, Heavy Equipment, Packaging)
Telecommunications (Equipment & Service providers)
Transportation (includes Airlines, Logistics Services, Railroads, & Trucking)

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Notes about email convention
Notes about email convention
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