diff --git a/internal/user/send_recorder_test.go b/internal/user/send_recorder_test.go
index 2350ab07..25ea7185 100644
--- a/internal/user/send_recorder_test.go
+++ b/internal/user/send_recorder_test.go
@@ -324,6 +324,12 @@ func TestGetMessageHash(t *testing.T) {
 			lit2:      []byte(literal2),
 			wantEqual: false,
 		},
+		{
+                    name: "different date and message ID should still match",
+                    lit1: []byte("To: a@b.c\r\nDate: Fri, 13 Aug 1982\r\nMessage-Id: 1@b.c\r\n\r\nHello"),
+                    lit2: []byte("To: a@b.c\r\nDate: Sat, 14 Aug 1982\r\nMessage-Id: 2@b.c\r\n\r\nHello"),
+                    wantEqual: true,
+		},
 	}
 
 	for _, tt := range tests {