It can't be done in Outlook to my knowledge. And I doubt that Micro$oft will add that feature.
I bet you are sending out newsletters or to mailing lists. That is the only reason why you would need such a feature (which is why Micro$soft probably won't add it to Outlook BTW).
If you are doing that, then I would suggest getting a program designed for that. It would allow people to subscribe and unsubscribe, and you can permanently add people to a no e-mail list. Even if they (or someone else) adds their e-mail to the mailing list again, the no e-mail list would override that.
There are many software packages out there. You just have to look. There are also services you can subscibe to as well.
One I used to use is called Group Mail. It is for sending to mailing lists and has the feature you requested.
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If you are not sending out mailing lists or newsletters, then I would also have to suggest Human Willpower 1.0 or better. And if you opt to get Meditation 2.0, you will be able to get a free upgrade to Human Willpower 5.0 after several months*.
(*Human Willpower 5.0 is not available in stores and can only be purchased as an add-on item when purchasing Meditation 2.0 or better, Discipline 2.0 or better, or any version of Military Training [Expansion Packs sold seperately].)
Also, you should already have Human Willpower 1.0 installed. It comes standard on all HCM Computers (HCM = Human Computing Machines). It does, sometimes, get corrupted and needs to be re-installed, however. And it can be upgraded at any time.

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Seriously, try Group Mail or another software better suited for what you need. Outlook probably wasn't designed to do some of the things you are trying to do with it.