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    Not exactly a proper answer, but you can start reading here: baeldung.com/linux/evaluate-xpath Commented Nov 2, 2022 at 21:14
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    Please edit your question and i) add the output you need from this example input. Do you want the email as output? Valid XML as output? Do you want to keep emails matching the conditions or remove them? We can't tell without the expected output. ii) please provide a valid XML input example if you are working with XML. Commented Nov 2, 2022 at 21:21
  • Regarding comment above by WhiteOwl - using an XML capable tool is the right starting point - trying to parse xml with sed is a really bad idea. Commented Nov 2, 2022 at 21:31
  • There is no cnisfCF in the example so it can never be true. Commented Nov 2, 2022 at 22:48