diff --git a/addons/event/data/event_demo.xml b/addons/event/data/event_demo.xml
index 8c434201649..7ab534cbf32 100644
--- a/addons/event/data/event_demo.xml
+++ b/addons/event/data/event_demo.xml
@@ -128,7 +128,7 @@
     </record>
     <record id="event_2_mail_0" model="event.mail">
         <field name="event_id" ref="event.event_2"/>
-        <field name="template_id" ref="event.event_subscription"/>
+        <field name="template_ref" eval="'mail.template,%i' % ref('event.event_subscription')"/>
     </record>
 
     <record id="event.event_3" model="event.event">
@@ -164,7 +164,7 @@
     </record>
     <record id="event_3_mail_0" model="event.mail">
         <field name="event_id" ref="event.event_3"/>
-        <field name="template_id" ref="event.event_subscription"/>
+        <field name="template_ref" eval="'mail.template,%i' % ref('event.event_subscription')"/>
     </record>
 
     <!-- EVENT_4: very limited, intended to test seats reservation -->
diff --git a/addons/event/models/__init__.py b/addons/event/models/__init__.py
index 6dcac1874dd..3de00d4b7b9 100644
--- a/addons/event/models/__init__.py
+++ b/addons/event/models/__init__.py
@@ -7,5 +7,6 @@ from . import event_registration
 from . import event_stage
 from . import event_tag
 from . import event_ticket
+from . import mail_template
 from . import res_config_settings
 from . import res_partner
diff --git a/addons/event/models/event_event.py b/addons/event/models/event_event.py
index b8336668947..332c132e6b1 100644
--- a/addons/event/models/event_event.py
+++ b/addons/event/models/event_event.py
@@ -380,10 +380,8 @@ class EventEvent(models.Model):
             command = [Command.unlink(mail.id) for mail in mails_to_remove]
             if event.event_type_id.event_type_mail_ids:
                 command += [
-                    Command.create({
-                        attribute_name: line[attribute_name] if not isinstance(line[attribute_name], models.BaseModel) else line[attribute_name].id
-                        for attribute_name in self.env['event.type.mail']._get_event_mail_fields_whitelist()
-                    }) for line in event.event_type_id.event_type_mail_ids
+                    Command.create(line._prepare_event_mail_values())
+                    for line in event.event_type_id.event_type_mail_ids
                 ]
             if command:
                 event.event_mail_ids = command
diff --git a/addons/event/models/event_mail.py b/addons/event/models/event_mail.py
index 70207bd8ac9..9bdfa4cd7a8 100644
--- a/addons/event/models/event_mail.py
+++ b/addons/event/models/event_mail.py
@@ -29,6 +29,10 @@ class EventTypeMail(models.Model):
     _name = 'event.type.mail'
     _description = 'Mail Scheduling on Event Category'
 
+    @api.model
+    def _selection_template_model(self):
+        return [('mail.template', 'Mail')]
+
     event_type_id = fields.Many2one(
         'event.type', string='Event Type',
         ondelete='cascade', required=True)
@@ -44,16 +48,24 @@ class EventTypeMail(models.Model):
         ('before_event', 'Before the event'),
         ('after_event', 'After the event')],
         string='Trigger', default="before_event", required=True)
-    template_id = fields.Many2one(
-        'mail.template', string='Email Template',
-        domain=[('model', '=', 'event.registration')], ondelete='restrict',
-        help='This field contains the template of the mail that will be automatically sent')
+    template_model_id = fields.Many2one('ir.model', string='Template Model', compute='_compute_template_model_id', compute_sudo=True)
+    template_ref = fields.Reference(string='Template', selection='_selection_template_model', required=True)
 
-    @api.model
-    def _get_event_mail_fields_whitelist(self):
-        """ Whitelist of fields that are copied from event_type_mail_ids to event_mail_ids when
-        changing the event_type_id field of event.event """
-        return ['notification_type', 'template_id', 'interval_nbr', 'interval_unit', 'interval_type']
+    @api.depends('notification_type')
+    def _compute_template_model_id(self):
+        mail_model = self.env['ir.model']._get('mail.template')
+        for mail in self:
+            mail.template_model_id = mail_model if mail.notification_type == 'mail' else False
+
+    def _prepare_event_mail_values(self):
+        self.ensure_one()
+        return {
+            'notification_type': self.notification_type,
+            'interval_nbr': self.interval_nbr,
+            'interval_unit': self.interval_unit,
+            'interval_type': self.interval_type,
+            'template_ref': '%s,%i' % (self.template_ref._name, self.template_ref.id)
+        }
 
 
 class EventMailScheduler(models.Model):
@@ -64,6 +76,10 @@ class EventMailScheduler(models.Model):
     _rec_name = 'event_id'
     _description = 'Event Automated Mailing'
 
+    @api.model
+    def _selection_template_model(self):
+        return [('mail.template', 'Mail')]
+
     event_id = fields.Many2one('event.event', string='Event', required=True, ondelete='cascade')
     sequence = fields.Integer('Display order')
     notification_type = fields.Selection([('mail', 'Mail')], string='Send', default='mail', required=True)
@@ -78,10 +94,6 @@ class EventMailScheduler(models.Model):
         ('before_event', 'Before the event'),
         ('after_event', 'After the event')],
         string='Trigger ', default="before_event", required=True)
-    template_id = fields.Many2one(
-        'mail.template', string='Email Template',
-        domain=[('model', '=', 'event.registration')], ondelete='restrict',
-        help='This field contains the template of the mail that will be automatically sent')
     scheduled_date = fields.Datetime('Schedule Date', compute='_compute_scheduled_date', store=True)
     # contact and status
     mail_registration_ids = fields.One2many(
@@ -92,6 +104,14 @@ class EventMailScheduler(models.Model):
         [('running', 'Running'), ('scheduled', 'Scheduled'), ('sent', 'Sent')],
         string='Global communication Status', compute='_compute_mail_state')
     mail_count_done = fields.Integer('# Sent', copy=False, readonly=True)
+    template_model_id = fields.Many2one('ir.model', string='Template Model', compute='_compute_template_model_id', compute_sudo=True)
+    template_ref = fields.Reference(string='Template', selection='_selection_template_model', required=True)
+
+    @api.depends('notification_type')
+    def _compute_template_model_id(self):
+        mail_model = self.env['ir.model']._get('mail.template')
+        for mail in self:
+            mail.template_model_id = mail_model if mail.notification_type == 'mail' else False
 
     @api.depends('event_id.date_begin', 'event_id.date_end', 'interval_type', 'interval_unit', 'interval_nbr')
     def _compute_scheduled_date(self):
@@ -140,11 +160,11 @@ class EventMailScheduler(models.Model):
                 if scheduler.mail_done or scheduler.notification_type != 'mail':
                     continue
                 # no template -> ill configured, skip and avoid crash
-                if not scheduler.template_id:
+                if not scheduler.template_ref:
                     continue
                 # do not send emails if the mailing was scheduled before the event but the event is over
                 if scheduler.scheduled_date <= now and (scheduler.interval_type != 'before_event' or scheduler.event_id.date_end > now):
-                    scheduler.event_id.mail_attendees(scheduler.template_id.id)
+                    scheduler.event_id.mail_attendees(scheduler.template_ref.id)
                     scheduler.update({
                         'mail_done': True,
                         'mail_count_done': scheduler.event_id.seats_reserved + scheduler.event_id.seats_used,
@@ -168,7 +188,7 @@ class EventMailScheduler(models.Model):
         if random.random() < 0.1666 or scheduler.interval_unit in ('now', 'hours'):
             ex_s = exception_to_unicode(exception)
             try:
-                event, template = scheduler.event_id, scheduler.template_id
+                event, template = scheduler.event_id, scheduler.template_ref
                 emails = list(set([event.organizer_id.email, event.user_id.email, template.write_uid.email]))
                 subject = _("WARNING: Event Scheduler Error for event: %s", event.name)
                 body = _("""Event Scheduler for:
@@ -248,7 +268,7 @@ class EventMailRegistration(models.Model):
             reg_mail.scheduler_id.notification_type == 'mail'
         )
         for reg_mail in todo:
-            reg_mail.scheduler_id.template_id.send_mail(reg_mail.registration_id.id)
+            reg_mail.scheduler_id.template_ref.send_mail(reg_mail.registration_id.id)
         todo.write({'mail_sent': True})
 
     @api.depends('registration_id', 'scheduler_id.interval_unit', 'scheduler_id.interval_type')
diff --git a/addons/event/models/event_registration.py b/addons/event/models/event_registration.py
index 563eca16616..7a9429e3e1e 100644
--- a/addons/event/models/event_registration.py
+++ b/addons/event/models/event_registration.py
@@ -227,7 +227,7 @@ class EventRegistration(models.Model):
             default_model='event.registration',
             default_res_id=self.id,
             default_use_template=bool(template),
-            default_template_id=template.id,
+            default_template_ref='mail.template,%i' % template.id,
             default_composition_mode='comment',
             custom_layout="mail.mail_notification_light",
         )
diff --git a/addons/event/models/mail_template.py b/addons/event/models/mail_template.py
new file mode 100644
index 00000000000..f62f737bb4b
--- /dev/null
+++ b/addons/event/models/mail_template.py
@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, models
+from odoo.osv import expression
+
+
+class MailTemplate(models.Model):
+    _inherit = 'mail.template'
+
+    @api.model
+    def _name_search(self, name, args=None, operator='ilike', limit=100, name_get_uid=None):
+        """Context-based hack to filter reference field in a m2o search box to emulate a domain the ORM currently does not support.
+
+        As we can not specify a domain on a reference field, we added a context
+        key `filter_template_on_event` on the template reference field. If this
+        key is set, we add our domain in the `args` in the `_name_search`
+        method to filtrate the mail templates.
+        """
+        if self.env.context.get('filter_template_on_event'):
+            args = expression.AND([[('model', '=', 'event.registration')], args])
+        return super(MailTemplate, self)._name_search(name, args, operator, limit, name_get_uid)
diff --git a/addons/event/tests/common.py b/addons/event/tests/common.py
index ad3252dc0f2..0a2855d8ba7 100644
--- a/addons/event/tests/common.py
+++ b/addons/event/tests/common.py
@@ -80,12 +80,12 @@ class TestEventCommon(common.TransactionCase):
                 (0, 0, {  # right at subscription
                     'interval_unit': 'now',
                     'interval_type': 'after_sub',
-                    'template_id': cls.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
+                    'template_ref': 'mail.template,%i' % cls.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
                 (0, 0, {  # 1 days before event
                     'interval_nbr': 1,
                     'interval_unit': 'days',
                     'interval_type': 'before_event',
-                    'template_id': cls.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
+                    'template_ref': 'mail.template,%i' % cls.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
             ],
         })
         cls.event_0 = cls.env['event.event'].create({
diff --git a/addons/event/tests/test_event_internals.py b/addons/event/tests/test_event_internals.py
index 49b02f24141..9ea121503f1 100644
--- a/addons/event/tests/test_event_internals.py
+++ b/addons/event/tests/test_event_internals.py
@@ -104,7 +104,8 @@ class TestEventData(TestEventCommon):
         event_type.write({
             'event_type_mail_ids': [(5, 0), (0, 0, {
                 'interval_nbr': 1, 'interval_unit': 'days', 'interval_type': 'before_event',
-                'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})],
+                'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})
+            ],
             'event_type_ticket_ids': [(5, 0), (0, 0, {'name': 'TestRegistration'})],
         })
         event.write({'event_type_id': event_type.id})
@@ -117,7 +118,7 @@ class TestEventData(TestEventCommon):
         self.assertEqual(event.event_mail_ids.interval_nbr, 1)
         self.assertEqual(event.event_mail_ids.interval_unit, 'days')
         self.assertEqual(event.event_mail_ids.interval_type, 'before_event')
-        self.assertEqual(event.event_mail_ids.template_id, self.env.ref('event.event_reminder'))
+        self.assertEqual(event.event_mail_ids.template_ref, self.env.ref('event.event_reminder'))
         self.assertEqual(len(event.event_ticket_ids), 1)
 
         # update template, unlink from event -> should not impact event
@@ -161,7 +162,7 @@ class TestEventData(TestEventCommon):
                     'interval_nbr': 77,
                     'interval_unit': 'days',
                     'interval_type': 'after_event',
-                    'template_id': self.env.ref('event.event_reminder').id,
+                    'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder'),
                 })
             ]
         })
@@ -178,7 +179,7 @@ class TestEventData(TestEventCommon):
                     'notification_type': 'mail',
                     'interval_unit': 'now',
                     'interval_type': 'after_sub',
-                    'template_id': self.env.ref('event.event_subscription').id,
+                    'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_subscription'),
                 })
             ]
         })
@@ -306,6 +307,18 @@ class TestEventData(TestEventCommon):
             set(['Registration Ticket'])
         )
 
+    def test_event_mail_filter_template_on_event(self):
+        """Test that the mail template are filtered to show only those which are related to the event registration model.
+
+        This is important to be able to show only relevant mail templates on the related
+        field "template_ref".
+        """
+        self.env['mail.template'].search([('model', '=', 'event.registration')]).unlink()
+        self.env['mail.template'].create({'model_id': self.env['ir.model']._get('event.registration').id, 'name': 'test template'})
+        self.env['mail.template'].create({'model_id': self.env['ir.model']._get('res.partner').id, 'name': 'test template'})
+        templates = self.env['mail.template'].with_context(filter_template_on_event=True).name_search('test template')
+        self.assertEqual(len(templates), 1, 'Should return only mail templates related to the event registration model')
+
     @users('user_eventmanager')
     def test_event_registrable(self):
         """Test if `_compute_event_registrations_open` works properly."""
diff --git a/addons/event/tests/test_event_mail_schedule.py b/addons/event/tests/test_event_mail_schedule.py
index 34eacf1d701..1889e167010 100644
--- a/addons/event/tests/test_event_mail_schedule.py
+++ b/addons/event/tests/test_event_mail_schedule.py
@@ -39,22 +39,22 @@ class TestMailSchedule(TestEventCommon, MockEmail):
                     (0, 0, {  # right at subscription
                         'interval_unit': 'now',
                         'interval_type': 'after_sub',
-                        'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
+                        'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
                     (0, 0, {  # one day after subscription
                         'interval_nbr': 1,
                         'interval_unit': 'hours',
                         'interval_type': 'after_sub',
-                        'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
+                        'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_subscription')}),
                     (0, 0, {  # 1 days before event
                         'interval_nbr': 1,
                         'interval_unit': 'days',
                         'interval_type': 'before_event',
-                        'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
+                        'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
                     (0, 0, {  # immediately after event
                         'interval_nbr': 1,
                         'interval_unit': 'hours',
                         'interval_type': 'after_event',
-                        'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
+                        'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')}),
                 ]
             })
             self.assertEqual(test_event.create_date, now)
diff --git a/addons/event/views/event_views.xml b/addons/event/views/event_views.xml
index 289d0f49673..fdbae5777a1 100644
--- a/addons/event/views/event_views.xml
+++ b/addons/event/views/event_views.xml
@@ -13,7 +13,6 @@
                             <label for="name" string="Event Template"/>
                             <h1><field name="name" placeholder="e.g. Online Conferences" class="mb-2"/></h1>
                         </div>
-
                        <group>
                            <group>
                                <div colspan="2" class="o_checkbox_optional_field">
@@ -54,11 +53,12 @@
                            <page string="Communication" name="event_type_communication">
                                <field name="event_type_mail_ids" class="w-100">
                                    <tree string="Communication" editable="bottom">
-                                       <field name="notification_type" invisible="1"/>
-                                       <field name="template_id" attrs="{'required': [('notification_type', '=', 'mail')]}"/>
+                                       <field name="notification_type"/>
+                                       <field name="template_model_id" invisible="1"/>
+                                       <field name="template_ref" options="{'model_field': 'template_model_id', 'no_quick_create': True}" context="{'filter_template_on_event': True, 'default_model': 'event.registration'}"/>
                                        <field name="interval_nbr" attrs="{'readonly':[('interval_unit', '=', 'now')]}"/>
                                        <field name="interval_unit"/>
-                                       <field name="interval_type"/>
+                                        <field name="interval_type"/>
                                    </tree>
                                </field>
                            </page>
@@ -208,8 +208,9 @@
                                 <field name="event_mail_ids">
                                     <tree string="Communication" editable="bottom">
                                         <field name="sequence" widget="handle"/>
-                                        <field name="notification_type" invisible="1"/>
-                                        <field name="template_id" attrs="{'required': [('notification_type', '=', 'mail')]}" context="{'default_model': 'event.registration'}"/>
+                                        <field name="notification_type"/>
+                                        <field name="template_model_id" invisible="1"/>
+                                        <field name="template_ref" options="{'model_field': 'template_model_id', 'no_quick_create': True}" context="{'filter_template_on_event': True, 'default_model': 'event.registration'}"/>
                                         <field name="interval_nbr" attrs="{'readonly':[('interval_unit','=','now')]}"/>
                                         <field name="interval_unit"/>
                                         <field name="interval_type"/>
@@ -698,8 +699,9 @@
                         <group>
                             <group>
                                 <field name="event_id"/>
-                                <field name="notification_type" invisible="1"/>
-                                <field name="template_id" attrs="{'required': [('notification_type', '=', 'mail')]}"/>
+                                <field name="notification_type"/>
+                                <field name="template_model_id" invisible="1"/>
+                                <field name="template_ref" options="{'model_field': 'template_model_id', 'no_quick_create': True}" context="{'filter_template_on_event': True, 'default_model': 'event.registration'}"/>
                                 <field name="mail_state"/>
                             </group>
                             <group>
@@ -734,8 +736,9 @@
             <field name="arch" type="xml">
                 <tree string="Event Mail Schedulers">
                     <field name="event_id"/>
-                    <field name="notification_type" invisible="1"/>
-                    <field name="template_id" attrs="{'required': [('notification_type', '=', 'mail')]}"/>
+                    <field name="notification_type"/>
+                    <field name="template_model_id" invisible="1"/>
+                    <field name="template_ref" options="{'model_field': 'template_model_id', 'no_quick_create': True}" context="{'filter_template_on_event': True, 'default_model': 'event.registration'}"/>
                     <field name="scheduled_date"/>
                     <field name="mail_count_done"/>
                     <field name="mail_state" widget="icon_selection" string=" "
diff --git a/addons/event_sms/__manifest__.py b/addons/event_sms/__manifest__.py
index 94d9df26851..f5596d454b5 100644
--- a/addons/event_sms/__manifest__.py
+++ b/addons/event_sms/__manifest__.py
@@ -9,8 +9,6 @@
     'depends': ['event', 'sms'],
     'data': [
         'data/sms_data.xml',
-        'views/event_views.xml',
-        'views/event_mail_views.xml',
         'security/ir.model.access.csv',
         'security/sms_security.xml',
     ],
diff --git a/addons/event_sms/models/__init__.py b/addons/event_sms/models/__init__.py
index 95c3bd06c29..57080a42cfc 100644
--- a/addons/event_sms/models/__init__.py
+++ b/addons/event_sms/models/__init__.py
@@ -3,3 +3,4 @@
 
 from . import event_mail
 from . import event_registration
+from . import sms_template
diff --git a/addons/event_sms/models/event_mail.py b/addons/event_sms/models/event_mail.py
index f3ff5ca6ccf..812587ced14 100644
--- a/addons/event_sms/models/event_mail.py
+++ b/addons/event_sms/models/event_mail.py
@@ -7,29 +7,35 @@ from odoo import api, fields, models
 class EventTypeMail(models.Model):
     _inherit = 'event.type.mail'
 
-    notification_type = fields.Selection(selection_add=[
-        ('sms', 'SMS')
-    ], ondelete={'sms': 'set default'})
-    sms_template_id = fields.Many2one(
-        'sms.template', string='SMS Template',
-        domain=[('model', '=', 'event.registration')], ondelete='restrict',
-        help='This field contains the template of the SMS that will be automatically sent')
-
     @api.model
-    def _get_event_mail_fields_whitelist(self):
-        return super(EventTypeMail, self)._get_event_mail_fields_whitelist() + ['sms_template_id']
+    def _selection_template_model(self):
+        return super(EventTypeMail, self)._selection_template_model() + [('sms.template', 'SMS')]
+
+    notification_type = fields.Selection(selection_add=[('sms', 'SMS')], ondelete={'sms': 'set default'})
+
+    @api.depends('notification_type')
+    def _compute_template_model_id(self):
+        sms_model = self.env['ir.model']._get('sms.template')
+        sms_mails = self.filtered(lambda mail: mail.notification_type == 'sms')
+        sms_mails.template_model_id = sms_model
+        super(EventTypeMail, self - sms_mails)._compute_template_model_id()
 
 
 class EventMailScheduler(models.Model):
     _inherit = 'event.mail'
 
-    notification_type = fields.Selection(selection_add=[
-        ('sms', 'SMS')
-    ], ondelete={'sms': 'set default'})
-    sms_template_id = fields.Many2one(
-        'sms.template', string='SMS Template',
-        domain=[('model', '=', 'event.registration')], ondelete='restrict',
-        help='This field contains the template of the SMS that will be automatically sent')
+    @api.model
+    def _selection_template_model(self):
+        return super(EventMailScheduler, self)._selection_template_model() + [('sms.template', 'SMS')]
+
+    notification_type = fields.Selection(selection_add=[('sms', 'SMS')], ondelete={'sms': 'set default'})
+
+    @api.depends('notification_type')
+    def _compute_template_model_id(self):
+        sms_model = self.env['ir.model']._get('sms.template')
+        sms_mails = self.filtered(lambda mail: mail.notification_type == 'sms')
+        sms_mails.template_model_id = sms_model
+        super(EventMailScheduler, self - sms_mails)._compute_template_model_id()
 
     def execute(self):
         for scheduler in self:
@@ -39,12 +45,12 @@ class EventMailScheduler(models.Model):
                 if scheduler.mail_done:
                     continue
                 # no template -> ill configured, skip and avoid crash
-                if not scheduler.sms_template_id:
+                if not scheduler.template_ref:
                     continue
                 # Do not send SMS if the communication was scheduled before the event but the event is over
                 if scheduler.scheduled_date <= now and (scheduler.interval_type != 'before_event' or scheduler.event_id.date_end > now):
                     self.env['event.registration']._message_sms_schedule_mass(
-                        template=scheduler.sms_template_id,
+                        template=scheduler.template_ref,
                         active_domain=[('event_id', '=', scheduler.event_id.id), ('state', '!=', 'cancel')],
                         mass_keep_log=True
                     )
@@ -69,7 +75,7 @@ class EventMailRegistration(models.Model):
         )
         for reg_mail in todo:
             reg_mail.registration_id._message_sms_schedule_mass(
-                template=reg_mail.scheduler_id.sms_template_id,
+                template=reg_mail.scheduler_id.template_ref,
                 mass_keep_log=True
             )
         todo.write({'mail_sent': True})
diff --git a/addons/event_sms/models/sms_template.py b/addons/event_sms/models/sms_template.py
new file mode 100644
index 00000000000..fbb666da1d2
--- /dev/null
+++ b/addons/event_sms/models/sms_template.py
@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, models
+from odoo.osv import expression
+
+
+class SmsTemplate(models.Model):
+    _inherit = 'sms.template'
+
+    @api.model
+    def _name_search(self, name, args=None, operator='ilike', limit=100, name_get_uid=None):
+        """Context-based hack to filter reference field in a m2o search box to emulate a domain the ORM currently does not support.
+
+        As we can not specify a domain on a reference field, we added a context
+        key `filter_template_on_event` on the template reference field. If this
+        key is set, we add our domain in the `args` in the `_name_search`
+        method to filtrate the SMS templates.
+        """
+        if self.env.context.get('filter_template_on_event'):
+            args = expression.AND([[('model', '=', 'event.registration')], args])
+        return super(SmsTemplate, self)._name_search(name, args, operator, limit, name_get_uid)
diff --git a/addons/event_sms/tests/test_sms_schedule.py b/addons/event_sms/tests/test_sms_schedule.py
index 0ad5dd5a9f2..b9ecbeeb6c2 100644
--- a/addons/event_sms/tests/test_sms_schedule.py
+++ b/addons/event_sms/tests/test_sms_schedule.py
@@ -33,13 +33,13 @@ class TestSMSSchedule(TestEventCommon, SMSCase):
                     'interval_unit': 'now',
                     'interval_type': 'after_sub',
                     'notification_type': 'sms',
-                    'sms_template_id': cls.sms_template_sub.id}),
+                    'template_ref': 'sms.template,%i' % cls.sms_template_sub.id}),
                 (0, 0, {  # 3 days before event
                     'interval_nbr': 3,
                     'interval_unit': 'days',
                     'interval_type': 'before_event',
                     'notification_type': 'sms',
-                    'sms_template_id': cls.sms_template_rem.id}),
+                    'template_ref': 'sms.template,%i' % cls.sms_template_rem.id}),
             ]
         })
 
diff --git a/addons/event_sms/views/event_mail_views.xml b/addons/event_sms/views/event_mail_views.xml
deleted file mode 100644
index 430eef7dfef..00000000000
--- a/addons/event_sms/views/event_mail_views.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0"?>
-<odoo><data>
-    <record id="event_mail_view_form" model="ir.ui.view">
-        <field name="name">event.mail.view.form.inherit.sms</field>
-        <field name="model">event.mail</field>
-        <field name="inherit_id" ref="event.view_event_mail_form"/>
-        <field name="arch" type="xml">
-            <xpath expr="//field[@name='notification_type']" position="attributes">
-                <attribute name="invisible">0</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="attributes">
-                <attribute name="attrs">{'readonly': [('notification_type', '!=', 'mail')], 'required': [('notification_type', '=', 'mail')]}</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="after">
-                <field name="sms_template_id"
-                    attrs="{'readonly': [('notification_type', '!=', 'sms')], 'required': [('notification_type', '=', 'sms')]}"
-                    context="{'default_model': 'event.registration'}"/>
-            </xpath>
-        </field>
-    </record>
-
-    <record id="event_mail_view_tree" model="ir.ui.view">
-        <field name="name">event.mail.view.tree.inherit.sms</field>
-        <field name="model">event.mail</field>
-        <field name="inherit_id" ref="event.view_event_mail_tree"/>
-        <field name="arch" type="xml">
-            <xpath expr="//field[@name='notification_type']" position="attributes">
-                <attribute name="invisible">0</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="attributes">
-                <attribute name="attrs">{'readonly': [('notification_type', '!=', 'mail')], 'required': [('notification_type', '=', 'mail')]}</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="after">
-                <field name="sms_template_id"
-                    attrs="{'readonly': [('notification_type', '!=', 'sms')], 'required': [('notification_type', '=', 'sms')]}"
-                    context="{'default_model': 'event.registration'}"/>
-            </xpath>
-        </field>
-    </record>
-
-</data></odoo>
diff --git a/addons/event_sms/views/event_views.xml b/addons/event_sms/views/event_views.xml
deleted file mode 100644
index fb49147c973..00000000000
--- a/addons/event_sms/views/event_views.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0"?>
-<odoo><data>
-
-    <record id="event_type_view_form" model="ir.ui.view">
-        <field name="name">event.type.view.form.inherit.sms</field>
-        <field name="model">event.type</field>
-        <field name="inherit_id" ref="event.view_event_type_form"/>
-        <field name="arch" type="xml">
-            <xpath expr="//field[@name='notification_type']" position="attributes">
-                <attribute name="invisible">0</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="attributes">
-                <attribute name="attrs">{'readonly': [('notification_type', '!=', 'mail')], 'required': [('notification_type', '=', 'mail')]}</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="after">
-                <field name="sms_template_id"
-                    attrs="{'readonly': [('notification_type', '!=', 'sms')], 'required': [('notification_type', '=', 'sms')]}"
-                    context="{'default_model': 'event.registration'}"/>
-            </xpath>
-        </field>
-    </record>
-
-    <record id="event_event_view_form_inherit_sms" model="ir.ui.view">
-        <field name="name">event.event.view.form</field>
-        <field name="model">event.event</field>
-        <field name="inherit_id" ref="event.view_event_form"/>
-        <field name="arch" type="xml">
-            <xpath expr="//field[@name='notification_type']" position="attributes">
-                <attribute name="invisible">0</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="attributes">
-                <attribute name="attrs">{'readonly': [('notification_type', '!=', 'mail')], 'required': [('notification_type', '=', 'mail')]}</attribute>
-            </xpath>
-            <xpath expr="//field[@name='template_id']" position="after">
-                <field name="sms_template_id"
-                    attrs="{'readonly': [('notification_type', '!=', 'sms')], 'required': [('notification_type', '=', 'sms')]}"
-                    context="{'default_model': 'event.registration'}"/>
-            </xpath>
-        </field>
-    </record>
-
-</data></odoo>
diff --git a/addons/test_event_full/tests/test_event_security.py b/addons/test_event_full/tests/test_event_security.py
index 1c4cdd32d26..0dfe2a7a0db 100644
--- a/addons/test_event_full/tests/test_event_security.py
+++ b/addons/test_event_full/tests/test_event_security.py
@@ -94,7 +94,7 @@ class TestEventSecurity(TestEventCommon):
                 'name': 'ManagerEventType',
                 'event_type_mail_ids': [(5, 0), (0, 0, {
                     'interval_nbr': 1, 'interval_unit': 'days', 'interval_type': 'before_event',
-                    'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})]
+                    'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})]
             })
 
     @users('user_eventmanager')
@@ -105,7 +105,7 @@ class TestEventSecurity(TestEventCommon):
             'name': 'ManagerEventType',
             'event_type_mail_ids': [(5, 0), (0, 0, {
                 'interval_nbr': 1, 'interval_unit': 'days', 'interval_type': 'before_event',
-                'template_id': self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})]
+                'template_ref': 'mail.template,%i' % self.env['ir.model.data'].xmlid_to_res_id('event.event_reminder')})]
         })
         event_type.write({'name': 'New Name'})