--- title: uChecker Reviews meta\_title: 'uChecker Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how uChecker works for a business like yours. date\_modified: '2026-08-19' parent\_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # uChecker Reviews & Product Details uChecker checks email lists in bulk. Upload a .txt or .csv with up to 9 million addresses in one job. Dead domains drop out automatically and are not billed. Speed is about 3200 addresses a minute. Results come back as Good, Bad and Risk, as an archive or as JSON. The mail server's full response is stored for each address, so a deleted mailbox, a frozen account and a mailbox over quota stay different answers. Addresses that cannot be checked go to Unknown and are never counted as valid. Use the dashboard at app.uchecker.net, the REST API at api.uchecker.net/docs, or the Telegram bot. There is an MCP endpoint for agents. 100 free validations to try. 13 free email DNS tools with no account at https://uchecker.net/tools. The platform has processed 1,444,486,294 addresses, of which 193,095,406 were unique. * * * Seller [uChecker](https://www.g2.com/sellers/uchecker) Discussions [uChecker Community](https://www.g2.com/products/uchecker/discuss) Show More ## Top-Rated Alternatives [ ![Apollo.io](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Apollo.io") Apollo.io 4.7/5(9,819) ](https://www.g2.com/products/apollo-io/reviews) [ ![GTM Workspace - Powered by ZoomInfo](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "GTM Workspace - Powered by ZoomInfo") GTM Workspace - Powered by ZoomInfo 4.5/5(9,113) ](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) [ ![RocketReach](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "RocketReach") RocketReach 4.4/5(1,379) ](https://www.g2.com/products/rocketreach/reviews) [ View All Alternatives ](https://www.g2.com/products/uchecker/competitors/alternatives) ## uChecker hasn't been reviewed yet Used uChecker? Your experience helps thousands of software buyers make confident decisions. G2 reviews are authentic and verified. [ Here's how. ](#modal-36c1ec9db1922f88855d) We strive to keep our reviews authentic. G2 reviews are an important part of the buying process, and we understand the value they provide to both our customers and buyers. To ensure the value is retained, it's important to make certain that reviews are authentic and trustworthy, which is why G2 requires verified methods to write a review and validates the reviewer's identity before approving. G2 validates the reviewers identity with our moderation process that prevents inauthentic reviews, and we strive to collect reviews in a responsible and ethical manner. [Read more](https://legal.g2.com/community-guidelines) ##### Pricing Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more. [ View More Pricing Information ](https://www.g2.com/products/uchecker/pricing) ## Work at uChecker? 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