>Also, if a message was really urgent, you wouldn't have to click-through to see it.

i don't get that logic. what's the difference between

    Your adwords account was suspended due to suspected click fraud. [bunch of made up plausible reasons]. you may appeal by going to your adwords control panel [phising link here]

and

    Your adwords account was suspended. click here to see why [phising link here].

in both cases you'd be pretty tempted to click the link.