diff --git a/bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Event_send.xml b/bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Event_send.xml
index 534afd9a41620363f1d285d52f03d4e4fecb6bba..4626cae09af074fb6964219441c02baf0e11524e 100644
--- a/bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Event_send.xml
+++ b/bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Event_send.xml
@@ -104,6 +104,10 @@ for attachment in context.getAggregateValueList():\n
   attachment_list.append({\'mime_type\':mime_type,\n
                           \'content\':content,\n
                           \'name\':name})\n
+\n
+  # Allow to embed image in HTML by setting the relative URL of the image with FCKeditor\n
+  attachment_url = attachment.getRelativeUrl()\n
+  body = body.replace(\'src="%s"\' % attachment_url, \'src="cid:%s"\' % \'\'.join([\'%s\' % ord(i) for i in name]))\n
 \n
 # Build message per destination\n
 mail_message = None\n
@@ -206,6 +210,11 @@ if download:\n
                             <string>mime_type</string>
                             <string>content</string>
                             <string>name</string>
+                            <string>attachment_url</string>
+                            <string>append</string>
+                            <string>$append0</string>
+                            <string>i</string>
+                            <string>ord</string>
                             <string>mail_message</string>
                             <string>mail_template</string>
                             <string>multipart</string>
diff --git a/bt5/erp5_base/bt/revision b/bt5/erp5_base/bt/revision
index 3fa694f2455f39f033c48543cf4f6fed6f637488..27384974685c11f34eb44981eec6c97f035971e8 100644
--- a/bt5/erp5_base/bt/revision
+++ b/bt5/erp5_base/bt/revision
@@ -1 +1 @@
-437
\ No newline at end of file
+439
\ No newline at end of file