In RUNTIME-2741 many regex were removed to use SendMailHelper.EMAIL_VALIDATION

But instead of modifying the code where the regex is called, the constants were modified to use SendMailHelper.EMAIL_VALIDATION

Exemple in org.ametys.plugins.newsletter.subscribe.SubscribersClientSideElement

private static final Pattern __EMAIL_VALIDATOR = SendMailHelper.EMAIL_VALIDATION;

All the values modified like this should be removed and the SendMailHelper.EMAIL_VALIDATION should be called directly.