It's sad but true — when you get an email message, you really have no idea whether it's legitimate or fake. Unless, of course, you see the CertifiedEmail icon in your mailbox. CertifiedEmail adds a layer of protection to your Yahoo! Mail account by helping you distinguish legitimate commercial email from spam.

CertifiedEmail is managed by our partner Goodmail Systems. They're a company that manages the process of certifying emails, including transactional emails, like bank statements and order confirmations. The list of companies using CertifiedEmail continues to grow.

Note: CertifiedEmail's reassuring blue trust seal envelope tells you that a message is from a legitimate company and is safe to open and act upon, but you should exercise caution with emails that appear to be uncertified transactional messages.