Hi,

To include both the old and new name values in the notification message, you can use the context values that Odoo gives to server activities.

For example, use the following code:

old_name = record.name

new_name = record.env.context.get('new_name')

if old_name and new_name:

    body = f"Contact name {old_name} has been changed to {new_name}"    mail_values = {

        'subject': 'Contact Name Changed',

        'body_html': body,

        'email_to': 'recipient@gmail.com',  # Replace with the desired email address

        'email_from': record.env.user.email,

    }

    record.env['mail.mail'].create(mail_values).send()

Hope it helps.