Regex for email address

Note

Good enough to find addresses in text and catch typos in a form. The full RFC 5322 grammar allows far more (quoted local parts, IP-literal domains); the only real test of an address is sending it a message.

Matches in the example

• "ana@example.com"
• "bob.smith+news@mail.co.uk"

Token by token

1. [A-Za-z0-9._%+-]+ one of: “A” to “Z”, “a” to “z”, “0” to “9”, “.”, “_”, “%”, “+” or “-”, one or more times, as many as possible
2. @ the character “@”
3. [A-Za-z0-9.-]+ one of: “A” to “Z”, “a” to “z”, “0” to “9”, “.” or “-”, one or more times, as many as possible
4. \. the character “.”
5. [A-Za-z]{2,} one of: “A” to “Z” or “a” to “z”, 2 or more times, as many as possible

Other patterns

• Email address
• URL
• IPv4 address
• UUID
• Hex color
• Date (YYYY-MM-DD)
• Time (24-hour)
• US phone number
• Phone number (E.164)
• US ZIP code
• Credit card number
• URL slug
• Username
• Strong password
• HTML tag
• Semantic version
• MAC address
• JSON Web Token
• Hashtag
• @mention
• Number
• Leading and trailing whitespace
• Repeated word
• Blank lines
• Markdown link
• Quoted string
• Domain name
• File extension
• Base64
• Trailing comma