Do E-Mail proxy services exists to improve privacy and security?
Privacy in the sense that one wouldn't need to give a website his/her username (possibly even in the email@example.com form) and in a security sense that the used e-mail couldn't be used to log into the e-mail service (thereby making it useless for a leaked password, because the e-mail address couldn't be used to login).
firstname.lastname@example.org could be someone's e-mail. If there were a Google Privacy/Proxy service then one could generate as many random e-mails as possible and if one would be sent spam to, or leaked, it could be disabled:
could both redirect mail to email@example.com.
One could be blocked/disabled/removed if wanted without abandoning the real account (e.g. because
firstname.lastname@example.org has been compromised or spam is being sent to it).
Would it really improve security and privacy? Or am I missing something?
And does such a service exist? (as a bonus, replying from such proxy e-mails would be even better, converting the real account
from field to the proxy mail address)