Use URL-based logos, env-based WebGUI title, apstrom.ca link, update README

scraibe/email_sender.py

@@ -64,11 +64,19 @@ def _load_css(path: str) -> str:
         return f.read()
 
 
-def _logo1_inline_html() -> str:
+def _email_logo_html() -> str:
     """
-    Return an inline <img> tag for logo1.png as base64.
-    Falls back to empty string if not found.
+    Return logo HTML for emails.
+
+    Priority:
+      1) EMAIL_LOGO_URL (direct URL to logo image)
+      2) EMAIL_LOGO_PATH (local file; embedded as base64)
+      3) empty string if neither is set. 
     """
+    logo_url = os.getenv("EMAIL_LOGO_URL")
+    if logo_url:
+        return f'<img src="{logo_url}" alt="Logo" style="max-width:180px; display:block; margin:0 auto 10px auto;"/>'
+
     logo_path = os.getenv("EMAIL_LOGO_PATH", "/app/src/misc/logo1.png")
     if not os.path.exists(logo_path):
         return ""
@@ -76,7 +84,7 @@ def _logo1_inline_html() -> str:
     try:
         with open(logo_path, "rb") as f:
             b64 = base64.b64encode(f.read()).decode("utf-8")
-        return f'<img src="data:image/png;base64,{b64}" alt="A.P.Strom" style="max-width:180px; display:block; margin:0 auto 10px auto;"/>'
+        return f'<img src="data:image/png;base64,{b64}" alt="Logo" style="max-width:180px; display:block; margin:0 auto 10px auto;"/>'
     except Exception:
         return ""
 
@@ -90,14 +98,15 @@ def build_template_context(**runtime_kwargs: Any) -> Dict[str, Any]:
     Environment variables:
       - EMAIL_CONTACT_ADDRESS: value for {contact_email}
       - EMAIL_CSS_PATH: path to mail_style.css (optional; we inline it)
-      - EMAIL_LOGO_PATH: path to logo1.png (default: /app/src/misc/logo1.png)
+      - EMAIL_LOGO_URL: URL for email logo (preferred)
+      - EMAIL_LOGO_PATH: fallback local path for email logo
     """
     # Load and inline mail_style.css for consistent email styling
     css_path = os.getenv("EMAIL_CSS_PATH", "/app/src/misc/mail_style.css")
     css_text = _load_css(css_path)
 
-    # Build inline logo HTML
-    logo_html = _logo1_inline_html()
+    # Build logo HTML (URL or local fallback)
+    logo_html = _email_logo_html()
 
     ctx: Dict[str, Any] = {
         "contact_email": os.getenv("EMAIL_CONTACT_ADDRESS", "support@example.com"),