<p><a href="https://github.com/tomhughes" class="user-mention">@tomhughes</a> if I got what you were discussing about then I think are talking about validating if a string is most likely to be an actual email or not.<br>
I found out this regex in stackoverflow:   /^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+-+)|([A-Za-z0-9]+.+)|([A-Za-z0-9]+++))<em>[A-Za-z0-9]+@((\w+-+)|(\w+.))</em>\w{1,63}.[a-zA-Z]{2,6}$/i</p>
<p>Will it help in this case?</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/openstreetmap/openstreetmap-website/issues/1689#issuecomment-363547092">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABWnLXvZyxV_nhC_gkJ1aKY5hsiNisCMks5tSK-YgaJpZM4Qqf9h">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/ABWnLdP7VUhw9epo4_Fdpi3FkdeJ0m01ks5tSK-YgaJpZM4Qqf9h.gif" width="1" /></p>
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