Why do you need my e-mail and password for starting the SpamDrain account?

SpamDrain ia a unique and ridiculously easy way to get a spam-free inbox. One way to explain how it works would be to say that it is your digital butler Bartleby whom you have entrusted with the key to your mailbox, and Bartleby will continuously open and check your mailbox to see if there are any spam and viruses among the real e-mails. When such annoyances occur he immediately removes them from your mailbox so you will not be exposed to them.