diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index b52a5539..3ce55cc4 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -1012,7 +1012,7 @@
     "description": ""
   },
   "prompt_summarize_full_text": {
-    "message": "Summarize the following email or emails into a bullet point list. If there are multiple emails, consider the entire thread for the summary.",
+    "message": "You are an assistant that summarizes email conversations.\n\nGiven an email thread, produce a concise, accurate summary that captures:\n\n- The main topic or purpose of the conversation\n- Key decisions, conclusions, or agreements\n- Important questions, requests, or action items\n- Who is responsible for each action item (if stated)\n\nOmit greetings, signatures, quoted text, and redundant back-and-forth.\nDo not add assumptions or information not present in the emails.\n\nWrite the summary in clear, neutral language suitable for a busy professional.",
     "description": ""
   },
   "prompt_summarize_email_template": {
@@ -1020,7 +1020,7 @@
     "description": ""
   },
   "prompt_summarize_email_template_full_text": {
-    "message": "From: {%author%}\nTo: {%recipients%}\nCC: {%cc_list%}\nSubject: {%mail_subject%}\nDate: {%mail_datetime%}\nAttachments:\n{%mail_attachments_info%}\nBody:\n{%mail_text_body%}",
+    "message": "From: {%author%}\nTo: {%recipients%}\nCC: {%cc_list%}\nSubject: {%mail_subject%}\nDate: {%mail_datetime%}\nAttachments:\n{%mail_attachments_info%}\n\nBody:\n{%mail_text_body%}",
     "description": ""
   },
   "prompt_summarize_email_separator": {