Validating Email Addresses is one of the more elusive patterns to define, but this pattern will match 99.99% of all email addresses in actual use today.
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[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])? |
A further change you could make is to allow any two-letter country code top level domain and only specific generic top level domains. This regex filters dummy email addresses… Read More