diff --git a/test/insert b/test/insert
index f573c76c..021edb62 100755
--- a/test/insert
+++ b/test/insert
@@ -94,4 +94,28 @@ gen_insert_msg
 test_expect_code 1 "Insert message into non-existent folder" \
     "notmuch insert --folder=nonesuch < $gen_msg_filename"
 
+test_begin_subtest "Insert message, create folder"
+gen_insert_msg
+notmuch insert --folder=F --create-folder +folder < "$gen_msg_filename"
+output=$(notmuch search --output=files folder:F tag:folder)
+basename=$(basename "$output")
+test_expect_equal_file "$gen_msg_filename" "$MAIL_DIR/F/cur/${basename}"
+
+test_begin_subtest "Insert message, create subfolder"
+gen_insert_msg
+notmuch insert --folder=F/G/H/I/J --create-folder +folder < "$gen_msg_filename"
+output=$(notmuch search --output=files folder:F/G/H/I/J tag:folder)
+basename=$(basename "$output")
+test_expect_equal_file "$gen_msg_filename" "${MAIL_DIR}/F/G/H/I/J/cur/${basename}"
+
+test_begin_subtest "Insert message, create existing subfolder"
+gen_insert_msg
+notmuch insert --folder=F/G/H/I/J --create-folder +folder < "$gen_msg_filename"
+output=$(notmuch count folder:F/G/H/I/J tag:folder)
+test_expect_equal "$output" "2"
+
+gen_insert_msg
+test_expect_code 1 "Insert message, create invalid subfolder" \
+    "notmuch insert --folder=../G --create-folder $gen_msg_filename"
+
 test_done