piwik/piwik — pull request #51 by pebosi (2013-04-05 06:49:11+00:00)
Title: Adding apostroph as valid email char in local part

As requested in http://dev.piwik.org/trac/ticket/3873 i added apostroph to valid characters list, there are more to add. but i thought they could be added on request/later or we update to filter_var when piwik changes requirements to at least php 5.2