On Tue, Jun 28, 2011 at 7:08 PM, Platonides <Platonides(a)gmail.com> wrote:
MediaWiki doesn't provide such option. Since
emails are considered
private information, information such as "someone with this email is
registered here" is not disclosed.*
Such an option wouldn't have to disclose that: it could just provide
an ambiguous message and send an email to the address if it's in the
system.