erp5_base: create an Internet Message Post whenever an Email is sent

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Entity_sendEmail.py

@@ -29,4 +29,18 @@ mail_message = portal.Base_createMailMessageAsString(
   embedded_file_list=embedded_file_list,
   extra_header_dict=extra_header_dict)
 
-event.sendMailHostMessage(mail_message)
+internet_message_post_module = portal.getDefaultModuleValue('Internet Message Post', None)
+if internet_message_post_module is not None:
+  # erp5_interface_post is installed, so it is needed to track outgoing emails
+  internet_message_post = internet_message_post_module.newContent(
+    portal_type='Internet Message Post',
+    title="Internet Message for %s" % event.getTitle(),
+    reference=event.getReference(),
+    data=mail_message,
+  )
+  internet_message_post.allowExport()
+  event_aggregate_list = event.getAggregateList()
+  event_aggregate_list.append(internet_message_post.getRelativeUrl())
+  event.setAggregateList(event_aggregate_list)
+else:
+  event.sendMailHostMessage(mail_message)

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/MailMessage_send.py

@@ -79,8 +79,23 @@ if download or not use_activity:
       embedded_file_list=embedded_file_list,
       extra_header_dict=extra_header_dict)
 
-    if not use_activity:
-      context.activate(activity='SQLQueue').sendMailHostMessage(mail_message)
+    internet_message_post_module = portal.getDefaultModuleValue('Internet Message Post', None)
+    if internet_message_post_module is not None:
+      # erp5_interface_post is installed, so it is needed to track outgoing emails
+      internet_message_post = internet_message_post_module.newContent(
+        portal_type='Internet Message Post',
+        title="Internet Message for %s" % context.getTitle(),
+        reference=context.getReference(),
+        data=mail_message,
+      )
+      internet_message_post.allowExport()
+
+      mail_aggregate_list = context.getAggregateList()
+      mail_aggregate_list.append(internet_message_post.getRelativeUrl())
+      context.setAggregateList(mail_aggregate_list)
+    else:
+      if not use_activity:
+        context.activate(activity='SQLQueue').sendMailHostMessage(mail_message)
 
 if use_activity:
   method_kw = dict(event_relative_url=context.getRelativeUrl(),