diff --git a/justfile b/justfile
index c5fb0f5..88ab488 100644
--- a/justfile
+++ b/justfile
@@ -54,6 +54,9 @@ new number:
 
 # generate HTML email                
 mail file:
-	echo {{file}}
 	PYTHONPATH=PWD venv/bin/python ./scripts/prepare_email.py {{file}}
 
+# Format the content of a given newsletter
+format number:
+	PYTHONPATH=PWD venv/bin/python ./scripts/format.py --number={{number}}
+
diff --git a/scripts/format.py b/scripts/format.py
new file mode 100644
index 0000000..d711e48
--- /dev/null
+++ b/scripts/format.py
@@ -0,0 +1,23 @@
+import argparse
+from pathlib import Path
+
+REPLACEMENTS = {
+    " :": " :",
+    " ;": " :",
+    " !": " :",
+    " ?": " :",
+    "'": "’",
+}
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-n", "--number", required=True, type=int, help="Newsletter number")
+args = parser.parse_args()
+
+file = Path(f"./content/newsletter/craft-letter-{args.number}.md")
+
+with open(file) as f:
+    content = f.read()
+    for value, replacement in REPLACEMENTS.items():
+        content = content.replace(value, replacement)
+
+file.write_text(content)