from odoo import models, api class AccountMoveSend(models.TransientModel): _inherit = "account.move.send" @api.model def _get_default_mail_partner_ids(self, move, mail_template, mail_lang): """ The invoice 'Send by Email' wizard uses this to compute partner_ids (To:). We must disable active_test here to include archived partners. """ wiz = self.with_context(active_test=False, include_archived_partners=True) return super(AccountMoveSend, wiz)._get_default_mail_partner_ids(move, mail_template, mail_lang)