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    Validating e-mail addresses with underscores

    • Product: Alma


    Some of our users have e-mail addresses where you have a hyphen or an underscore directly before the @ character. (Example:

    These addresses are not accepted. We get an error message "Field Email Address must have a valid form does not match the regex defined in email_regex".


    Go to Configuration > User Management > Other Settings > email_regex

    The out-of-the-box entry is:


    Please replace with:




    • Article last edited: 19-Feb-2021
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