Use email logo as subtle watermark instead of standalone image

scraibe/email_sender.py

@@ -66,12 +66,12 @@ def _load_css(path: str) -> str:
 
 def _email_logo_html() -> str:
     """
-    Return logo HTML for emails.
+    Return a subtle watermark-style logo for emails.
 
     - Priority:
       1) EMAIL_LOGO_URL (direct URL)
       2) EMAIL_LOGO_PATH (local file as base64)
-    - Size: max 200% of line height (small).
+    - Style: small, faint, bottom-right, non-intrusive.
     """
     logo_url = os.getenv("EMAIL_LOGO_URL")
     src = logo_url
@@ -89,10 +89,11 @@ def _email_logo_html() -> str:
     if not src:
         return ""
 
-    # max-height limited to 200% of line height (approx 2em)
+    # Watermark: bottom-right, low opacity, compact
     return (
-        f'<img src="{src}" alt="Logo" '
-        f'style="max-height:2em; width:auto; display:block; margin:0 auto 0.5em auto;" />'
+        f'<div style="text-align: right; margin-top: 24px; opacity: 0.15;">'
+        f'<img src="{src}" alt="Logo" style="max-width: 90px; height: auto; display: inline-block;" />'
+        f'</div>'
     )