diff --git a/addons/event/models/event_mail.py b/addons/event/models/event_mail.py
index 2029624318d..2c45ee9cdfb 100644
--- a/addons/event/models/event_mail.py
+++ b/addons/event/models/event_mail.py
@@ -12,6 +12,8 @@ from dateutil.relativedelta import relativedelta
 from odoo import api, fields, models, tools
 from odoo.tools import exception_to_unicode
 from odoo.tools.translate import _
+from odoo.exceptions import MissingError
+
 
 _logger = logging.getLogger(__name__)
 
@@ -283,6 +285,7 @@ class EventMailRegistration(models.Model):
             (reg_mail.scheduled_date and reg_mail.scheduled_date <= now) and \
             reg_mail.scheduler_id.notification_type == 'mail'
         )
+        done = self.browse()
         for reg_mail in todo:
             organizer = reg_mail.scheduler_id.event_id.organizer_id
             company = self.env.company
@@ -297,10 +300,21 @@ class EventMailRegistration(models.Model):
             email_values = {
                 'author_id': author.id,
             }
-            if not reg_mail.scheduler_id.template_ref.email_from:
+            template = None
+            try:
+                template = reg_mail.scheduler_id.template_ref.exists()
+            except MissingError:
+                pass
+
+            if not template:
+                _logger.warning("Cannot process ticket %s, because Mail Scheduler %s has reference to non-existent template", reg_mail.registration_id, reg_mail.scheduler_id)
+                continue
+
+            if not template.email_from:
                 email_values['email_from'] = author.email_formatted
-            reg_mail.scheduler_id.template_ref.send_mail(reg_mail.registration_id.id, email_values=email_values)
-        todo.write({'mail_sent': True})
+            template.send_mail(reg_mail.registration_id.id, email_values=email_values)
+            done |= reg_mail
+        done.write({'mail_sent': True})
 
     @api.depends('registration_id', 'scheduler_id.interval_unit', 'scheduler_id.interval_type')
     def _compute_scheduled_date(self):
diff --git a/addons/event/tests/test_event_flow.py b/addons/event/tests/test_event_flow.py
index ea18ac57a89..9edcc2e8496 100644
--- a/addons/event/tests/test_event_flow.py
+++ b/addons/event/tests/test_event_flow.py
@@ -33,6 +33,12 @@ class TestEventFlow(EventCase):
             'name': 'TestReg1',
             'event_id': test_event.id,
         })
+        scheduler = self.env['event.mail'].sudo().search([
+            ('event_id', '=', test_event.id),
+            ('interval_type', '=', 'after_sub')
+        ])
+        self.assertTrue(scheduler.mail_registration_ids.mail_sent)
+
         self.assertEqual(test_reg1.state, 'open', 'Event: auto_confirmation of registration failed')
         self.assertEqual(test_event.seats_reserved, 1, 'Event: wrong number of reserved seats after confirmed registration')
         test_reg2 = self.env['event.registration'].with_user(self.user_eventuser).create({
@@ -105,3 +111,33 @@ class TestEventFlow(EventCase):
         self.assertEqual(
             test_reg1.state, 'draft',
             'Event: new registration should not be confirmed with auto_confirmation parameter being False')
+
+    @mute_logger('odoo.addons.event.models.event_mail')
+    def test_event_missed_mail_template(self):
+        """ Check that error on mail sending is ignored if corresponding mail template was deleted """
+        test_event = self.env['event.event'].with_user(self.user_eventmanager).create({
+            'name': 'TestEvent',
+            'date_begin': datetime.datetime.now() + relativedelta(days=-1),
+            'date_end': datetime.datetime.now() + relativedelta(days=1),
+            'seats_max': 2,
+            'seats_limited': True,
+        })
+        self.assertFalse(test_event.auto_confirm)
+
+        # EventUser create registrations for this event
+        test_reg = self.env['event.registration'].with_user(self.user_eventuser).create({
+            'name': 'TestReg1',
+            'event_id': test_event.id,
+        })
+
+        scheduler = self.env['event.mail'].sudo().search([
+            ('event_id', '=', test_event.id),
+            ('interval_type', '=', 'after_sub')
+        ])
+
+        # Imagine user deletes mail template for whatever reason
+        scheduler.template_ref.unlink()
+
+        # Mails should not be sent
+        test_reg.action_confirm()
+        self.assertFalse(scheduler.mail_registration_ids.mail_sent)