A user on our install reported this to me, but I'll try to provide as much detail as possible. Basically, we use project reviewers quite extensively. If we see a revision that we don't intend to review, the expectation is that we will resign from that revision. It seems, however, that we are still receiving emails from a revision even after resign from a revision. Here is a snippet from the `/mail/` application.
{F4945970}
{F4945972}