I say: Checks all your mail from multiple accounts before you download it. Since version 1.4 the free version has been limited to one account, which rather defeats the purpose. (I actually bought the pro version years ago and have had free upgrades ever since). I suspect there may be genuine freeware equivalents out there; I'm currently testing one called Magic Mail Monitor which looks very promising.
They say: "Introducing MailWasher, a leader in anti spam software, the easiest way to check and manage your e-mails before you download them.
MailWasher is free to use and won't ever expire.
Use this powerful anti spam software, a reliable spam blocker, that will effectively stop email spam. Discover the safe way to stop unwanted e-mails before they get to your computer.
No gimmicks here, it is so easy to set up and use that you'll be managing your email like a pro in seconds. It can even be used as an effective privacy tool.
I think you will find this to be the easiest, most effective way to manage your incoming e-mails. You will be amazed at how quickly you will like using MailWasher. "