This is one of those phishing emails, log in to confirm your address blah blah. Frankly, I think it's because we're on Tip.It. Someone is still getting email addresses, because when I left Tip.It for a few months, the emails stopped coming, as soon as I'm active on Tip.It I get flooded regularly. I'm not saying stay away from Tip.It, I'm just saying this is where the scam emails are probably coming from. In the future, if you get an email about an email change, password request, updating info or such, I would go on to the actual RuneScape account settings to see if anything actually has been tempered with, in most cases though it won't be.