MailNotification: don't require the URLs to be authentication-free
MailNotification: don't require the URLs to be authentication-free

We hope that in all practical protocols, the CM can open a
pre-authenticated webmail interface, but if it can't, opening a web page
that requires further authentication is better than nothing.

freedesktop-unofficial-mirror/telepathy__telepathy-spec,TelepathyIM/telepathy-spec