Email Regex Tester
Paste email addresses and test them against a standard or custom email regex pattern.
Pattern (Email address)
/^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$/
Summary
Paste email addresses and test them against a standard or custom email regex pattern.
How it works
- Choose or enter an email regex
- Paste test email addresses one per line
- See pass or fail for each line
- Copy the pattern for your validation code
Use cases
- Validating form email fields in web apps
- Filtering email lists for syntactic correctness
- Teaching RFC 5321 email format edge cases
Frequently Asked Questions
Last updated: 2026-06-09 ·
Reviewed by Nham Vu