[DOC] mail_mailgun: doc/index.rst formattings and new paragraph

mail_mailgun/doc/index.rst

@@ -9,25 +9,32 @@ Usage
 * On https://mailgun.com/app/domains click on sandbox...mailgun.org domain. Here you can see all information needed to configure odoo outgoing mail feature
 * Copy API Key value into odoo
 
- * Open menu Settings/Parameters/System Parameters
- * Edit mailgun.apikey parameter
- * Put API Key from mailgun into Value field and save
+  * Open menu Settings/Parameters/System Parameters
+  * Edit mailgun.apikey parameter
+  * Put API Key from mailgun into Value field and save
 
 * From https://mailgun.com/cp/routes create new route
 
- * Priority: ``0``
- * Filter expression: ``catch_all()``
- * Actions: ``store(notify="http://<your odoo domain>/mailgun/notify")``
+  * Priority: ``0``
+  * Filter expression: ``catch_all()``
+  * Actions: ``store(notify="http://<your odoo domain>/mailgun/notify")``
 
 * In odoo remove 'localhost' Outgoing Mail Server and create 'mailgun'. Now you can send emails
 * From odoo menu Settings/General Settings edit Alias Domain
 
- * Put your mailgun domain here. E.g. sandbox...mailgun.org
- * Click 'Apply' button
+  * Put your mailgun domain here. E.g. sandbox...mailgun.org
+  * Click 'Apply' button
 
 * Edit Messaging Alias for your user. Now you can receive emails that is sent to configured alias email address.
 
- * From menu Settings/Users/Users open you user and click 'Edit'
- * On Preference tab put alias into Messaging Alias field and click 'Save'
+  * From menu Settings/Users/Users open you user and click 'Edit'
+  * On Preference tab put alias into Messaging Alias field and click 'Save'. E.g. ``admin@sandbox...mailgun.org``
+
+* Send email on ``admin@sandox...mailgun.org``
+* Open ``Discuss`` from odoo
+* See your message there
+* Stop odoo and send several emails again. On odoo starting you see all your messages in ``Discuss``
+
+