Setting for .eml files consumed outside of mail fetch

src/paperless/settings.py

@@ -1030,6 +1030,11 @@ CONVERT_MEMORY_LIMIT = os.getenv("PAPERLESS_CONVERT_MEMORY_LIMIT")
 
 GS_BINARY = os.getenv("PAPERLESS_GS_BINARY", "gs")
 
+# Fallback layout for .eml consumption
+EMAIL_PARSE_DEFAULT_LAYOUT = __get_int(
+    "PAPERLESS_EMAIL_PARSE_DEFAULT_LAYOUT",
+    1,  # MailRule.PdfLayout.TEXT_HTML but that can't be imported here
+)
 
 # Pre-2.x versions of Paperless stored your documents locally with GPG
 # encryption, but that is no longer the default.  This behaviour is still

src/paperless_mail/parsers.py

@@ -231,12 +231,16 @@ class MailDocumentParser(DocumentParser):
     def generate_pdf(
         self,
         mail_message: MailMessage,
-        pdf_layout: MailRule.PdfLayout = MailRule.PdfLayout.TEXT_HTML,
+        pdf_layout: MailRule.PdfLayout | None = None,
     ) -> Path:
         archive_path = Path(self.tempdir) / "merged.pdf"
 
         mail_pdf_file = self.generate_pdf_from_mail(mail_message)
 
+        pdf_layout = (
+            pdf_layout or settings.EMAIL_PARSE_DEFAULT_LAYOUT
+        )  # EMAIL_PARSE_DEFAULT_LAYOUT is a MailRule.PdfLayout
+
         # If no HTML content, create the PDF from the message
         # Otherwise, create 2 PDFs and merge them with Gotenberg
         if not mail_message.html: