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Regex expression to find specific words within the subject line or body of email (content) regardless of case and plurals
Hello..
I have been working on a regex expression that would do word matches against the verbiage in the subject line and the body of an email for the purpose of deleting these emails.
A portion of the expression I have been using so far is:
\b\w*(companionship|handsome|relationship|refinance|gutter|cleanse|dating|pain|knee|joint|pain||hemorrhoid|hemorrhoids|diabetes)\w*\b
There are two things that I have not been able to figure out is how to do.
- Make the match of words be case insensitive for all of the words in the list
- How to deal with plurals, such as hemorrhoid/hemorrhoids.
Are there additional regex parameters that will do either of those things when added to the expression?
My thanks for your help!
Paul
Accepted Solution
BruceW
Gold Problem Solver
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26.7K Messages
2 years ago
If you're asking about Comcast's "Appsuite" Open-Xchange webmail, all Regex string comparisons appear to be preset as case-insensitive.
For regular nouns that form plurals by simply adding an "s" as above, the form "words?" should work: the ? makes the "s" optional. But it gets a lot messier if you want to match words with more complicated plural forms like "tomato" ("tomatoes"), "party" ("parties"), and "leaf" ("leaves").
More Appsuite/Regex filter info at:
https://documentation.open-xchange.com/components/middleware/http/7.10.6/index.html#mail-filter
https://forums.xfinity.com/conversations/email/email-filter-rules-difference/62fab3e42ff2c66589fcf7d5
https://datatracker.ietf.org/doc/html/draft-murchison-sieve-regex#section-3
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