validation
Email Address Regex Pattern
Practical email regex that catches 99% of valid addresses. Not RFC 5322 exhaustive (that pattern is 6,000+ characters). This one validates 'anything-then-@-then-anything-then-dot-then-anything' with no spaces.
/^[^\s@]+@[^\s@]+\.[^\s@]+$/ What each part matches
^[^\s@]+ — one or more chars that aren't whitespace or @@ — literal at sign[^\s@]+ — one or more chars that aren't whitespace or @ (domain part)\. — literal dot (escaped)[^\s@]+$ — TLD, one or more non-space non-@ characters✓ These match
✗ These don't
- not-an-email
- user@
- @example.com
- user @example.com
Use in your code
JavaScript
const re = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
re.test(input); // → true or falsePython
import re
re.fullmatch(r"^[^\s@]+@[^\s@]+\.[^\s@]+$", input)PHP (PCRE)
preg_match('/^[^\s@]+@[^\s@]+\.[^\s@]+$/', $input);Go
re := regexp.MustCompile(`^[^\s@]+@[^\s@]+\.[^\s@]+$`)
re.MatchString(input)FAQ
Does this email address regex work in JavaScript?
Yes. Every pattern in the Utilko regex library is tested to work in JavaScript RegExp, PCRE (PHP, Nginx), and Python `re`. Where flavor matters (lookbehind, named groups), the pattern page flags it.
How do I use this pattern?
Copy the pattern from the code block above. In JavaScript:
new RegExp('^[^\s@]+@[^\s@]+\.[^\s@]+$') or literal /^[^\s@]+@[^\s@]+\.[^\s@]+$/. Or click "Try in regex tester" to open it pre-loaded in Utilko's browser-based regex tester.Should I use this for security-critical validation?
Client-side regex is fine for UX (immediate feedback on a form). For anything security-critical — payments, auth, data integrity — always re-validate server-side using the same pattern PLUS domain-specific checks (Luhn checksum for cards, actual email delivery test, DNS resolution for domains).