lib/PublicInbox/LeiInput.pm | 2 ++
 t/lei-import-http.t         | 5 +++++

diff --git a/lib/PublicInbox/LeiInput.pm b/lib/PublicInbox/LeiInput.pm
index 917f682ba97961c2d35e20935d0e8b69926fd1f9..85caac35aa24d8ab1f7d7d0e173377ca2c83ab40 100644
--- a/lib/PublicInbox/LeiInput.pm
+++ b/lib/PublicInbox/LeiInput.pm
@@ -229,6 +229,8 @@ 					push @{$sync->{no}}, $input;
 				}
 			}
 		} elsif ($input_path =~ m!\Ahttps?://!i) {
+			# TODO: how would we detect r/w JMAP?
+			push @{$sync->{no}}, $input if $sync;
 			prepare_http_input($self, $lei, $input_path) or return;
 		} elsif ($input_path =~ s/\A([a-z0-9]+)://is) {
 			my $ifmt = lc $1;
diff --git a/t/lei-import-http.t b/t/lei-import-http.t
index 35cbf3693e4dc8737ab889d82ace111accf1c0f6..6cb8a75387b26f0e93d8f03fe10e546552f3fae1 100644
--- a/t/lei-import-http.t
+++ b/t/lei-import-http.t
@@ -39,5 +39,10 @@ 	lei_ok 'q', 'm:20180720072141.GA15957@example';
 	$res = json_utf8->decode($lei_out);
 	is($res->[0]->{'m'}, '20180720072141.GA15957@example',
 			'imported search result') or diag explain($res);
+
+	ok(!lei(qw(import --mail-sync), "$url/x\@example.com/raw"),
+		'--mail-sync fails on HTTP');
+	diag $lei_err;
+
 });
 done_testing;