Almost just fell for a spearphishing attack. These things can be scarily convincing if you're not paying attention. It was an email purporting to be from my VPS provider saying there was a problem with my payment information.

Apart from the fact that the email address it was sent from and the site it linked to were random domains obviously not associated with my provider, the fact that when I looked at the source of the message, the image of their logo was <img src="https://en.wikipedia.org/..."> was a bit of a tip off as well.