Lost Messages Routing is an Odoo app, which helps to make sure that no messages are lost. If any email can't be attached, it would be marked as 'lost' and would be added to the special view, from where you will be able to attach them to the required document thread. 

You can route both lost messages and any other messages, which are stored in Odoo. Lost messages are kept in the special menu 'Lost Messages'. Ordinary messages are kept in the Odoo technical menu 'Messages'.

The app allows lost messages batch addressing through the tree mass action. In such a way, a few messages might be added to the same Odoo document. 

It is possible to restrict Odoo models to which messages might be routed. This way, responsible users will be able to route messages only to allowed-for-routing models.

Configure Odoo to send notifications about lost messages. Choose users or/and mail channels that should be warned.

In order to be able to manage the lost messages, the special user group 'Lost Messages Manager' is introduced. This is the only type of user that can see the app and manage lost messages.

A lost message - is a message, which cannot be attached automatically by Odoo to any object's thread. The module Lost Messages Routing finds such messages using the standard Odoo mail fetching scheduled job and marks them as 'lost'. After that, the messages are moved to the special menu 'Lost Messages'.

The module Lost Messages Routing has a convenient interface, which can be accessed in two ways. To open the Lost Messages menu:

1. Click on the app's icon on the main interface (visible only by the user group 'Lost Messages Manager')

2. In developer mode, go to Technical > Lost Messages (available for the system administrator)

As you open the app you see the same interface as used in the technical menu 'Messages'.

From the list view, you can see:

1. The date and time, when the message was sent

2. The subject of the message, if any

3. The author of the message, if the sender's email is attached to one of the contacts

The module allows not only to see the lost messages but also to attach them to any object with a thread. You can either route a single message or several messages in a batch. Click on a message to see its body and extra details. This information might help you to decide to which model and object the message relates.

There are several ways to route a message:

1. After opening a message, by clicking the button 'Route Manual'

2. By selecting one or several messages from the list menu and choosing the action 'Route Manual'

To route a single message:

1. Open a message

2. Click 'Route Manual'

3. Define a model and choose a parent object (click on the icon  to see the object in a pop-up window). Only allowed models are seen and can be chosen for routing (see Configuring Models for Routing)

4. Click 'Attach Message'

After routing, the message will be added to the thread of a chosen object. As it is no more ‘lost’, it will be removed from the lost messages menu. The message will be stored with the ordinary messages in the technical menu ‘Messages’, where you can find it and reroute it again if necessary.

The app also allows batch addressing through the tree mass action. In such a way, a few messages might be added to the same Odoo document.

To route one, several, or all messages from the app's menu:

1. Select one or several messages by putting a tick in the box by the required message, or choose all by ticking the box above all messages

2. Click Action > Route Manual

3. Define a model and choose a parent object (click on the icon  to see the object in a pop-up window). Only allowed models are seen and can be chosen for routing (see Configuring Models for Routing)

4. Click 'Attach Message'

After routing, the message will be added to the thread of a chosen object. As it is no more ‘lost’, it will be removed from the lost messages menu. The message will be stored with the ordinary messages in the technical menu ‘Messages’, where you can find it and reroute it again if necessary.

Sometimes there might be a necessity to delete an object. For example, when its a spam. In this case, you can delete it by selecting the message in the main menu and choosing the action 'Delete'. Or, after opening it, by clicking on the gear above and choosing 'Delete'.

If the message is neither spam nor lost, you can remove the tick 'Unattached message' in the form. In this case, the message will disappear from the lost messages menu, however, it will still be accessible from the technical menu 'Messages'.

To be able to react quickly, when a message is lost, it is possible to set notifications. Choose users or/and mail channels that should be warned. Users are notified by email and channels are notified by a message. 

To configure notifications:

1. In the menu Lost Messages

2. Click 'Configuration'

3. Tick the box 'Lost messages notification'

4. Choose some users or channels to be notified

The chosen users will be notified about each lost message by email. The email subject will be 'The message is not attached'. In the email's body, users will find the subject of the lost message if it had any.

You can open the lost message for further actions, by clicking the button 'Click'. After that, you will be redirected to the message form, from which a message can be routed (see Routing Lost Messages).

You can also send notifications about lost messages in a discussion. For that, chose the channel in the field 'Notify channels'. Then, everyone who takes part in the channel will see the notification. 

The notification contains the message's subject and the link to it. Click on it to route the message to a particular object's thread (see Routing Lost Messages).

All users, who take part in the channel, see the notification. However, only the users with the special user group 'Lost Messages Manager' assigned can open the message, by clicking on the link (see Access Rights).

It might happen, that some people in the discussion will not have the access to the message. Keep that in mind as you choose channels to notify. Otherwise, users without access will see the warning, but not the message.

In order to be able to manage the lost messages, the special user group 'Lost Messages Manager' is introduced. This is the only type of user that can see the app and manage lost messages. Other users have no access to it. To assign a 'Lost Messages Manager':

1. Go to the General Settings

2. Choose a particular user

3. Click 'Edit'

4. Scroll to the bottom of the page to the section 'Other'

5. Find the field 'Lost Messages Manager' and tick it

6. Click 'Save'

After assigning the user group 'Lost Messages Manager', the special menu 'Lost Messages' will become available for such users. Messages can be routed through it even if the developer mode is off.

Admin can route a message in developer mode through the technical menu even without being a lost messages manager.

It is also important to have rights not only for the model but also for the objects to which a message should be routed. Without access, the object will not be visible on the step of defining a model and object for routing. Thus, without access to the object, a user will not be able to route a message to it. 

For example, a lost messages manager received a message from Azure Interior with the request to change the delivery date of the Sales Order 'S0063'. The manager has the access to the model 'Sales Order', so he/she can use it as a Parent Object. However, in the list of available objects, the user will not find the order 'S0063' as another salesperson is responsible for this order.