Use Mt for emails.
diff --git a/man/zip_open.mdoc b/man/zip_open.mdoc
index c442e1c..41fbb7e 100644
--- a/man/zip_open.mdoc
+++ b/man/zip_open.mdoc
@@ -133,6 +133,6 @@
 .Xr zip_fdopen 3
 .Sh AUTHORS
 .An -nosplit
-.An Dieter Baron Aq dillo@nih.at
+.An Dieter Baron Aq Mt dillo@nih.at
 and
-.An Thomas Klausner Aq tk@giga.or.at
+.An Thomas Klausner Aq Mt tk@giga.or.at