Using an external outgoing email server allows to send email with the domain of the user (instead of john.doe@mydomain.odoo.com) and to exceed the email daily limit allowed by our email server.

Here are the steps to follow to configure it with GSuite :

1. In the General Settings, enable the External Email Servers and set the Alias Domain (i.e. : mydomain.com).

2. Create and configure the Outgoing Email Server as follow :

- Description : GSuite

- SMTP Server : smtp.gmail.com

- SMTP Port : 465

- Connection Security : SSL/TLS

- Username : john.doe@mydomain.com (this user has to be the administrator of the GSuite account)

- Password : [Ask your customer]

3. Go to the administration of GSuite by using the username and the password above.

4. Go to Manage your Google Account > Security and turn on the "Less secure app access" feature.

5. Wait five minutes and test the connection from Odoo.

6. Go to the administration of GSuite and create a new user with this following email : catchall@mydomain.com (are you surprised ?).

7. Go to the Gmail settings > Advanced Settings > Routing > Recipient address map and create the following mapping : catchall@mydomain.com,catchall@mydomain.odoo.com.

8. Don't forget to save the configuration.

9. Try it by sending a email through the chatter and answer.

10. Refresh the chatter and enjoy the result by drinking a beer.