I need a regex to match phishing email names, where a specific name or word is NOT found.
For example...
John Smith ([email protected])
John Smith ([email protected])
John Smith ([email protected])
John Smith ([email protected])
Where the bottom email is the only legit email, and needs to be ignored.
I have tried similar to:
^(J|j)ohn.(S|s)mith.*\@^((?i)\bmymail\.com\b)*$
But this fails to select the 3 bad emails. Also tried similar to:
^(J|j)ohn.(S|s)mith.*@gmail\.com
but this method only removes the Gmail one.
How can I properly pattern match to remove all bad emails regardless of letter case, and to only allow one domain (in this case mymail.com) and no others?
You may use this regex with a negative look ahead condition
^[jJ]ohn.[sS]mith[^@]*@(?!mymail\.com).+
RegEx Details:
^: Start[jJ]ohn: Match John or john.: Match any character[sS]mith[: Match Smith or smith[^@]*: Match 0 or kore of any character except @@: Match a @(?!mymail\.com): Negative lookahead to fail the match if we have mymail.com is at next position.+: Match 1+ of any character