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I've been looking at the documentation on the inbox_item type, and I was wondering what is the correct way to uniquely identify an inbox_item?

Is the "link" URL enough to uniquely identify an "inbox_item"? Is it ever the case that two links will point to the same notification event?

What happens when questions are migrated to new sites? Does the link change in this case too?

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up vote 5 down vote accepted

link is the best way to distinguish between items. No two items should have the same link, and inbox items aren't updated after they are created; they're snapshots of activity more than references to it.

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OK, that clears up a lot of confusion... my next question was going to be are inbox items ever change once they're created. Thanks! – Alex Lockwood Aug 15 '12 at 21:48

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