To your second question, yes, it is. Your identity provider can do whatever you want, so as long as you can make a website that shows you a &quot;connect with your SSH now&quot; prompt and have that turn green when you connect, then Persona can go on top of that.<p>Persona is just a way for your email domain to say &quot;yes I know this person&quot;. The way the site does that doesn&#x27;t matter to Persona, and there was a service similar to mailinator that just let you log in with a disposable email address everywhere, with no other authentication.