diff --git a/email_priority_classifier/type/classified_email_data.py b/email_priority_classifier/type/classified_email_data.py
index 2a1086f..c3cba6c 100644
--- a/email_priority_classifier/type/classified_email_data.py
+++ b/email_priority_classifier/type/classified_email_data.py
@@ -1,5 +1,6 @@
 import base64
 import json
+import re
 
 _LABEL_REPLACE_DATA = {
     "INBOX": "Inbox",
@@ -37,8 +38,7 @@ def _extract_subject_from_payload(payload: dict) -> str:
 
     @staticmethod
     def _decode_body(body: str, headers: list[dict]) -> str:
-        return (base64.urlsafe_b64decode(body).decode("utf-8")
-                .replace("\r", "").replace("\n", "").replace("\t", ""))
+        return re.sub(r"\s+", " ", base64.urlsafe_b64decode(body).decode("utf-8"))
         """
         for header in headers:
             if header.get("name", "").lower() == 'content-transfer-encoding':