&gt; I don&#x27;t know why you said that. Gmail addresses can&#x27;t have +&#x27;s in them<p>I was saying that regarding to automatically stripping out +string from the email to thwart this. Gmail uses them as a special character, but it is a valid email character, along with all these <a href="http:&#x2F;&#x2F;stackoverflow.com&#x2F;a&#x2F;2049510" rel="nofollow">http:&#x2F;&#x2F;stackoverflow.com&#x2F;a&#x2F;2049510</a>