Hi,

In odoo, if a mail is bounced then its status is considered as in cancelled state. So you can make an automated rule based on this state. You can see all the emails and its status from Settings -> Technical -> Emails - Email

So please try with below automation rule 

Add your action to perform.-- 

Hope it helps

In Odoo, when an email is bounced, it will be marked as such in the mail system. You can use this information to trigger an automated action. For example, you could create a server action that is triggered when an email is marked as bounced, and this action could send a notification to a specific email address or group of users, alerting them to the bounced email. This way, you can ensure that bounced emails are not overlooked and can be dealt with in a timely manner.

In Odoo, when an email is sent and is returned to the sender as undeliverable, it is considered to be bounced. This typically occurs when the recipient's email address is invalid or their mailbox is full. In Odoo, bounced emails are typically indicated by a red exclamation mark icon next to the email in the messaging history. You can also check the email's status in the messaging history to see if it was successfully delivered or if it bounced. Additionally, you can set up automated actions in Odoo to be triggered when an email bounces, such as sending a notification to the sender or creating a task to follow up on the bounced email.