Example regular expressions
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Depending on where you want to match in an email or SMTP session, you may need to add syntax to the following patterns in order to match a whole line, or only at the start and/or end of text. For example, to compare the pattern to an entire line: ^pattern$ |
Email addresses
Email address user names are often a mix of letters, numbers, and possibly periods ( . ).
[[:alnum:].]*@example\.com
Alternative words in a phrase
/word1|word2|word3/
Purposefully misspelled words
Spammers often insert other characters between the letters of a word to avoid detection by antispam software, or replace characters with similar-looking numbers, punctuation, or characters in another language.
.*v.*i.*a.*g.*r.*
cr[eéèêë3]*dit [sS§5]c[oO0]re
Common spam phrases
Number of spaces, characters, and punctuation may vary.
try it for fr[e]+
student[ _-]*loans
you[’`"']re already approved
special[ _;!%~#§£@°()\+\-\*\.]*offer