It seems like a reasonable request. Just type in your email address to enter a contest or sign up for a newsletter or score a discount coupon. What could go wrong? Ugh. You already know the answer.

There are plenty of good reasons why you might want to change your email account. You want or need to change email providers, you hate your current email address, or you’ve become inundated with spam.

With these free online tools, you can immediately check whether your email address has been leaked on the internet and is associated with stolen data. One of the two tools, haveibeenpwned, has just ...