Dolphin 7.0.6 has a "Automatic profile activation after joining: [ ]" check box in Admin >> Settings >> Moderation Settings >> Postmoderation.

Does unchecking this box do the same thing as your mod? If not, how do the two differ?

Your work is always fantastic!
When you're unchecking "Automatic profile activation after joining" the member is still able to login, although his status is Approval and he can't do almost anything.
But with "Mandatory Confirmation" such a member wouldn't be able to login, untill approved or confirmed his email. In other words member will not be able to login at all till his profile staus isn't Active.
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.