Email Address Validator
Check email syntax and catch common domain typos.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Validates email syntax against the practical RFC rules, normalises the domain, and suggests corrections for common typos such as gmial.com. It states clearly that syntax validation cannot prove a mailbox exists.
How to use it
- Paste one address per line.
- Press Validate to see syntax results.
- Review domain suggestions before sending.
Frequently asked questions
Can this check if the mailbox exists?
No. That requires sending a message or a DNS and SMTP probe, which would be intrusive and unreliable here.
Are plus-addressed emails valid?
Yes. Everything after a plus sign is a valid sub-address tag for most providers.
Keep going
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