Partner Mail Forwarding

This module adds a single new setting to contacts and users: a "Forwarding Partner" field. You can set it on a contact form (next to the website field) or on a user form and in the user's own preferences, where each user can change it themselves.

When Odoo prepares the list of people who should be notified about a message, it now also adds the forwarding partner of any recipient who has one. The forwarded copy keeps the same notification preferences as the forwarding partner's own user (or falls back to email), and the original recipient is still notified as usual.

• The forwarding partner is only added if they are not already in the recipient list, and each forwarding partner is added only once per message.
• The field is available on res.partner and on res.users (linked to the user's contact), and users are allowed to read and write it from their own preferences.
• No new menus, reports, or scheduled actions are created; the change appears inside the standard contact and user screens and in the message notification logic of mail.thread.