from odoo import fields, models class ResPartner(models.Model): _inherit = "res.partner" mails_to = fields.Integer(compute="_compute_mails_to") mails_from = fields.Integer(compute="_compute_mails_from") def _compute_mails_to(self): for r in self: r.mails_to = ( self.env["mail.message"] .sudo() .search_count([("partner_ids", "in", r.id)]) ) def _compute_mails_from(self): for r in self: r.mails_from = ( self.env["mail.message"].sudo().search_count([("author_id", "=", r.id)]) )