Thank you for the responses to the call for beta testers. We will notify those who have been accepted.
We expect this feature to be available to all by the end of August.
An error occurred while saving the commentDai Rees commented
Office 365 (and on-prem Exchange) needs the ability to have "disposable" or "instant" email address aliases, like GMail has.
This is where you can specify an arbitrary "tag" in your email address after your normal alias. So if you have "email@example.com" then you can use "firstname.lastname@example.org" and "email@example.com" to let you give a different address to GameStop and Amazon, which makes it easier to filter their emails, as well as protecting your mailbox from untrusted spammers (especially if you add a fake top-level alias and block all email to that alias).
GMail has supported this feature for over a decade now, it's only fair that Outlook/Office 365/Exchange catch-up, and it's a great weapon in a way against spam and unwanted mail.
As a bonus, please add an optional "message count" feature like SpamGourmet has, where you can limit the number of messages received on a particular disposable alias (e.g. "firstname.lastname@example.org" would be limited to 10 emails before all messages are blocked).
Disposable aliases require an ability to instantly block an alias once spam is detected, but a simple GUI can be used for that.
Disposable aliases could be stored in another list-type property in the Active Directory user object the way current aliases for Exchange are stored, so I don't understand why the Exchange team hasn't built this feature.