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Catchemail addresses must not match Profile > Notification > Forward User/email as this causes a mail loop. As of JEMH v.4.2.11., entering a match will result in an edit time error:
Catchemail address can be a plain address (user@domain.com) or a regular expression, we have a bootstrapping page (Regex Bootcamp ) with some examples.
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Catch Email Headers
CSV list of Email Headers that JEMH should check for a Catch Email Address within.
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