diff --git a/.config/mail/format.py b/.config/mail/format.py
index aacf24e1..54f0e44a 100755
--- a/.config/mail/format.py
+++ b/.config/mail/format.py
@@ -9,15 +9,19 @@ with open(sys.argv[1], 'r') as f:
 
 skipping = False
 for line in lines:
-    prefix = line.strip()[0]
-    match prefix:
-        case ">":
-            # ignore quoted line
-            print(line)
-        case "```":
-            # ignore code block
-            skipping = not skipping
-        case _:
-            # wrap the line
+    if line.startswith(">"):
+        # ignore quoted line
+        print(line)
+    elif line.startswith("```"):
+        # ignore code block
+        skipping = not skipping
+    elif line.startswith("--"):
+        skipping = True
+    else:
+        # wrap the line
+        if not skipping:
             wrapped = textwrap.wrap(line, width=74, break_long_words=False, replace_whitespace=True)
-    
+
+            print("\n".join(wrapped))
+        else:
+            print(line)
diff --git a/.config/mail/test.txt b/.config/mail/test.txt
new file mode 100644
index 00000000..33890672
--- /dev/null
+++ b/.config/mail/test.txt
@@ -0,0 +1,10 @@
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+```
+print("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx")
+```
+
+--
+Signature should be untouched!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!