Default: none
+=item publicinboxmda.spamcheck
+
+This may be set to C<none> to disable the use of SpamAssassin
+L<spamc(1)> for filtering spam before it is imported into git
+history. Other spam filtering backends may be supported in
+the future.
+
+Default: spamc
+
=item publicinboxwatch.spamcheck
This may be set to C<spamc> to enable the use of SpamAssassin