To reproduce ============ - on website add or edit **contact us** form to create a task on a project - fill the form from Incognito - on project -> the created task : try to send message on chatter - you will find the email used when filling the form with possibilty to check it as receiver - check the box, a dialog will open to create a Partner for this email - close the dialog without modifying anything Problem ======= the checkbox will remain checked, but when you send a message no email will be sent Solution ======== as stated in this comment https://github.com/odoo/odoo/blob/de1f701e7bd7ebb6f7ebea5c097d980039c4f904/addons/mail/static/src/components/composer_suggested_recipient/composer_suggested_recipient.js#L128-L130 we will only send the message to partnenrs, so if no partner is created we must uncheck the checkbox. opw-3168779 closes odoo/odoo#113701 X-original-commit: 24e6a16e349e1521fadc8c18574c15389c550f0c Signed-off-by: Sébastien Theys (seb) <seb@odoo.com> Signed-off-by: abla001 <abla@odoo.com>