Update mail-guide.html (POP3)

management/templates/mail-guide.html

@@ -37,6 +37,7 @@
 					</table>
 
 					<p>In addition to setting up your email, you&rsquo;ll also need to set up <a href="#sync_guide" onclick="return show_panel(this);">contacts and calendar synchronization</a> separately.</p>
+					<p>As an alternative to IMAP you can also use the POP protocol. For this you just need to pick POP as the protocol in your e-mail client, and use the port 995. The SMTP settings and usernames and passwords remain the same. However, we strongly recommend to use IMAP or ActiveSync.</p>
 
 				<h4>Exchange/ActiveSync settings</h4>