List Services

Build targeted, custom government email lists from KnowWho's database of more than 200,000 active contacts. Choose the branch of government that fits your objectives or subscribe to one of our self-service, list-building tools.

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Custom Mailing List

Choose from more than 211,000 government contacts in our database and filter based on sector, position or title, location, or other data you need to meet your list requirements.


Government Email Lists

Access real-time mailing lists for contacts across Congress, the Federal Executive branch, state governments, and local government. Our flexible filtering options make it easy to build accurate lists and create powerful campaigns, and nightly updates ensure the most accurate data on the market.