Bulk email verification plus 13 free DNS tools. uChecker is built for marketing, sales, and support teams that need to clean large email lists before sending. It checks addresses in bulk and keeps the full mailbox reply, so you can see whether an address was deleted, frozen, or simply full. Results are grouped into Good, Bad, Risk, and Unknown, and Unknown rows are not counted as valid. Lists upload as .txt or .csv files, and thirteen DNS tools stay available with no account required, which makes it useful for deliverability checks and routine domain troubleshooting.
Marketing, sales, and support teams that send to large email lists, plus agencies and developers handling deliverability.
Features & Use Cases
- Bulk email verification with full mailbox reply retained
- Results grouped into Good, Bad, Risk, and Unknown
- Upload .txt or .csv lists, up to 9 million addresses per job
- Processing speed around 3200 addresses a minute
- Thirteen DNS tools usable with no account
- Marketing, sales, and support teams that send to large email lists, plus agencies and developers handling deliverability.
Full Review
uChecker is a practical communication option for teams that need to move from idea to execution without a long setup process.
The platform stands out for Marketing, sales, and support teams that send to large email lists, plus agencies and developers handling deliverability., and it is often most useful for operators who want a faster path to deployment than a larger, more customizable stack.
It is usually strongest when the need is clear and the team values speed over deep customization.
- Marketing, sales, and support teams that send to large email lists, plus agencies and developers handling deliverability.
- Teams evaluating communication tools
- Organizations that need extensive white-glove onboarding
- Teams that want deep custom automation beyond the core feature set
Pricing: Freemium
Ready to try uChecker?
Visit the official site to explore plans, demos & free options.

