Regex Email Validator
Test and debug regular expressions with real-time highlighting. Free, fast, and runs 100% in your browser.
Email validation is one of the most common regex use cases — and one of the trickiest to get right. This tester helps you build and test email regex patterns against a variety of valid and edge-case email addresses, with instant visual feedback on matches.
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Regex Tester
Test and debug regular expressions with real-time matching
//
3 matches found
#1
Index: 14hello@example.com#2
Index: 35support@company.org#3
Index: 89admin@test.coCommon Patterns:
\\d+ — Digits\\w+ — Word chars[a-zA-Z]+ — Letters\\b\\w+@\\w+\\.\\w+\\b — Email^https?:// — URL start\\d{3}-\d{3}-\d{4} — PhoneFeature Overview
| Feature | Details |
|---|---|
| Real-time matching | ✓ |
| Flag toggles | g, i, m |
| Capture groups | ✓ |
| Privacy | 100% client-side |
Frequently Asked Questions
What is the best regex for email?
A simple, widely-used pattern is /^[^\s@]+@[^\s@]+\.[^\s@]+$/. For strict RFC 5322 compliance, use a more complex pattern.
Should I rely on regex alone for email validation?
No. Regex catches formatting errors, but sending a confirmation email is the only way to verify an address actually exists.