<p>I think it's because you have <code>it-IT</code> but that isn't an actual language we have. Using <code>it</code> does work.</p>

<p>There's obviously some difference in the way we match languages for the web site vs when sending emails.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href="https://github.com/openstreetmap/openstreetmap-website/issues/1125#issuecomment-169018899">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/ABWnLas58YgiLKxZSbo8QUfVmT7rUJPhks5pW81UgaJpZM4G-0Fd.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/openstreetmap/openstreetmap-website/issues/1125#issuecomment-169018899"></link>
  <meta itemprop="name" content="View Issue"></meta>
</div>
<meta itemprop="description" content="View this Issue on GitHub"></meta>
</div>