diff --git a/app/email_utils.py b/app/email_utils.py
index a6797b57..2b53d4eb 100644
--- a/app/email_utils.py
+++ b/app/email_utils.py
@@ -844,8 +844,8 @@ def get_encoding(msg: Message) -> EmailEncoding:
     - base64
     - 7bit: default if unknown or empty
     """
-    cte = str(msg.get("content-transfer-encoding", "")).lower()
-    if cte in ("", "7bit", "8bit", "binary"):
+    cte = str(msg.get("content-transfer-encoding", "")).lower().strip()
+    if cte in ("", "7bit", "8bit", "binary", "8bit;"):
         return EmailEncoding.NO
 
     if cte == "base64":