Can I delete my iCloud email address?

As I said earlier, I do think that it ought to be possible - people may find themselves in situations where they don't want an old address hanging about on the server, even if it's bouncing mail because the account has filled up; if people want to abandon an iCloud account they should be able to shut it down completely (while ensuring that the address can never be reused - that may be part of the reasoning why you can't delete an account).

What you can (in theory) do is to create an alias as a new address, and then set up a Rule to move all messages addressed to the main address to the Trash or another folder (though someone I advised to do this was complaining that this didn't work - it certainly should have done and of course I don't know whether he'd hit a glitch or had done something wrong somewhere).

I do think that it ought to be possible - people may find themselves in situations where they don't want an old address hanging about on the server, even if it's bouncing mail because the account has filled up

I agree.

I've been doing some comparisons it seems that an @icloud email address is the ONLY one that cannot be deleted from a system.

Reluctantly, I must go with Gmail.

Im looking for the answer now

You cannot delete it. Why do you want to delete it? Are you still using the Apple ID that is linked to it, or is the iCloud ID your actual Apple ID and you don't want to use it at all anymore?

GB