Format validation only. Does not check if the mailbox exists.
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100 calls/day, no card, no spam. Built by one person, in public.
About Email Valid
Working with developer and design work no longer requires installing heavy desktop software — Email Valid runs entirely in your browser, instantly. Everything happens client-side, which means your files and data never leave your machine. The interface is intentionally minimal so you can focus on the task instead of learning the tool. It pairs naturally with the other developer utilities here when you need to chain a quick workflow.
When you'd reach for Email Valid
You're cleaning up a folder of files that accumulated over a project and need to standardize them.
Designers, writers, and developers wrapping up deliverables.
Drop each file in, copy the output, move on.
You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.
Marketers and ops people whose primary tool is metered.
Stay productive without burning credits.
You need to handle a one-off task right before a meeting and don't have time to install anything.
Anyone working remotely on a borrowed or restricted machine.
Open the page, get the result, paste it into your doc — under a minute.
You're on a public or shared machine and don't want to leave traces of what you're working on.
Travelers, contractors, anyone working from a friend's computer.
Nothing is uploaded, nothing persists if you're not signed in.
Frequently asked about Email Valid
- Can I use Email Valid commercially?
- Yes. The output of Email Valid belongs entirely to you, with no licensing restrictions.
- Are my files uploaded to a server when I use Email Valid?
- Email Valid processes everything in your browser using local APIs. Your files never leave your device.
- Is Email Valid really free?
- Yes — Email Valid is free for unlimited personal use, with no account required and no watermark on the output.
- What browsers does Email Valid support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Will Email Valid change my original file?
- Never. Email Valid only reads your input file and produces a new output file.