diff --git a/addons/mass_mailing/data/mailing_data_templates.xml b/addons/mass_mailing/data/mailing_data_templates.xml
index 14dc81da528..53baaf0c224 100644
--- a/addons/mass_mailing/data/mailing_data_templates.xml
+++ b/addons/mass_mailing/data/mailing_data_templates.xml
@@ -108,13 +108,16 @@
 <data noupdate="0">
     <template id="ab_testing_description" name="Mass Mailing: A/B Test Description">
         <div name="ab_testing_description" class="mb-2">
+            <t t-if="mailing.state == 'done' and mailing.sent == 0 and mailing.failed == 0 and mailing.canceled == 0">
+                <span>There wasn't enough recipients left for this mailing</span>
+            </t>
             <t t-if="mailing.ab_testing_completed">
                 <p t-if="mailing.ab_testing_is_winner_mailing">
                     This <t t-out="mailing.mailing_type_description"/> is the winner of the A/B testing campaign and has been sent to all remaining recipients.
                 </p>
                 <p t-else="">The winner has already been sent. Use <b>Compare Version</b> to get an overview of this A/B testing campaign.</p>
             </t>
-            <t t-elif="mailing.ab_testing_mailings_count >= 2">
+            <t t-elif="ab_testing_count >= 2">
                 <p>
                     A sample of <b><t t-out="mailing.ab_testing_pc"/>% of recipients</b> will receive this version.<br/>
                     <t t-if="total_ab_testing_pc > 100 and mailing.active">
diff --git a/addons/mass_mailing/models/mailing.py b/addons/mass_mailing/models/mailing.py
index 92a45a3dfbf..2a48e9b036d 100644
--- a/addons/mass_mailing/models/mailing.py
+++ b/addons/mass_mailing/models/mailing.py
@@ -203,6 +203,7 @@ class MassMailing(models.Model):
         related="campaign_id.ab_testing_winner_selection", readonly=False,
         default="opened_ratio",
         copy=True)
+    is_ab_test_sent = fields.Boolean(compute="_compute_is_ab_test_sent")
     kpi_mail_required = fields.Boolean('KPI mail required', copy=False)
     # statistics data
     mailing_trace_ids = fields.One2many('mailing.trace', 'mass_mailing_id', string='Emails Statistics')
@@ -472,6 +473,13 @@ class MassMailing(models.Model):
                 mailing._get_ab_testing_description_values()
             )
 
+    @api.depends('campaign_id.mailing_mail_ids.state')
+    def _compute_is_ab_test_sent(self):
+        for rec in self:
+            ab_testing_mailings = rec._get_ab_testing_siblings_mailings()
+            selected_mailings = ab_testing_mailings.filtered(lambda m: m.state == 'done')
+            rec.is_ab_test_sent = bool(selected_mailings)
+
     def _get_ab_testing_description_modifying_fields(self):
         return ['ab_testing_enabled', 'ab_testing_pc', 'ab_testing_schedule_datetime', 'ab_testing_winner_selection', 'campaign_id']
 
@@ -853,6 +861,7 @@ class MassMailing(models.Model):
             raise ValueError(_("A/B test option has not been enabled"))
         final_mailing = self.copy({
             'ab_testing_pc': 100,
+            'name': _(" %(subject)s (final)", subject=self.name) # Add suffix on name to show it's the final mailing
         })
         self.campaign_id.ab_testing_winner_mailing_id = final_mailing
         final_mailing.action_launch()
@@ -868,6 +877,7 @@ class MassMailing(models.Model):
         self.ensure_one()
         return {
             'mailing': self,
+            'ab_testing_count': self.ab_testing_mailings_count,
             'ab_testing_winner_selection_description': self._get_ab_testing_winner_selection()['description'],
             'total_ab_testing_pc': sum([
                 mailing.ab_testing_pc for mailing in self._get_ab_testing_siblings_mailings()
diff --git a/addons/mass_mailing/static/src/scss/mass_mailing.scss b/addons/mass_mailing/static/src/scss/mass_mailing.scss
index 7552ddb9a3d..e821d82e4d8 100644
--- a/addons/mass_mailing/static/src/scss/mass_mailing.scss
+++ b/addons/mass_mailing/static/src/scss/mass_mailing.scss
@@ -48,6 +48,11 @@
             width: 135px;
         }
     }
+
+    .o_notebook .tab-content .tab-pane .alert {
+        margin-left: -$o-sheet-cancel-hpadding;
+        margin-right: -$o-sheet-cancel-hpadding;
+    }
 }
 
 .o_form_view.o_mass_mailing_mailing_form .o_form_renderer {
@@ -178,15 +183,11 @@
 }
 
 .o_mass_mailing_mailing_form.o_mass_mailing_form_full_width .alert.alert-info:not(.o_invisible_modifier) {
+    margin: 0 0 0 12px;
     flex: 1;
-    padding: unset;
+    padding: 0.5rem 0.5rem;
     border-left-width: 1px;
     border-left-color: #dee2e6;
-
-    > div {
-        min-height: 100%;
-        padding: 6px;
-    }
 }
 
 .o_form_view.o_xxl_form_view .o_mass_mailing_mailing_form {
diff --git a/addons/mass_mailing/views/mailing_mailing_views.xml b/addons/mass_mailing/views/mailing_mailing_views.xml
index f2f84c36dda..740e7ec61a8 100644
--- a/addons/mass_mailing/views/mailing_mailing_views.xml
+++ b/addons/mass_mailing/views/mailing_mailing_views.xml
@@ -72,61 +72,63 @@
                         <button name="action_cancel" type="object" attrs="{'invisible': [('state', '!=', 'in_queue')]}" class="btn-secondary" string="Cancel" data-hotkey="z"/>
                         <button name="action_retry_failed" type="object" attrs="{'invisible': ['|', ('state', '!=', 'done'), ('failed', '=', 0)]}" class="oe_highlight" string="Retry" data-hotkey="y"/>
 
+                        <div class="alert alert-info mb-2 text-center" role="alert"
+                             attrs="{'invisible': ['&amp;','&amp;','&amp;','&amp;','&amp;',('state', 'not in', ['in_queue', 'done']),('sent', '=', 0),('canceled', '=', 0),('scheduled', '=', 0),('failed', '=', 0),('warning_message', '=', False)]}">
+                            <div class="o_mails_canceled" attrs="{'invisible': [('canceled', '=', 0)]}">
+                                <button class="btn-link py-0"
+                                        name="action_view_traces_canceled"
+                                        type="object">
+                                    <strong>
+                                        <field name="canceled" class="oe_inline me-2"/>
+                                        <span name="canceled_text">emails have been canceled and will not be sent.</span>
+                                    </strong>
+                                </button>
+                            </div>
+                            <div class="o_mails_scheduled" attrs="{'invisible': [('scheduled', '=', 0)]}">
+                                <button class="btn-link py-0"
+                                        name="action_view_traces_scheduled"
+                                        type="object">
+                                    <strong>
+                                        <field name="scheduled" class="oe_inline me-2"/>
+                                        <span name="scheduled_text">emails are in queue and will be sent soon.</span>
+                                    </strong>
+                                </button>
+                            </div>
+                            <div class="o_mails_sent" attrs="{'invisible': ['&amp;', ('sent', '=', 0), ('state', 'in', ('draft', 'test', 'in_queue'))]}">
+                                <button class="btn-link py-0"
+                                        name="action_view_traces_sent"
+                                        type="object">
+                                    <strong>
+                                        <field name="sent" class="oe_inline me-2"/>
+                                        <span name="sent">emails have been sent.</span>
+                                    </strong>
+                                </button>
+                                <strong class="d-block" attrs="{'invisible': ['|', ('mailing_type', '=', 'mail'), '|', ('ab_testing_enabled', '=', False), '|', ('state', '!=', 'done'), '|', ('sent', '!=', 0), '|', ('failed', '!=', 0), ('canceled', '!=', 0)]}">
+                                    <span name="ab_test_text">There wasn't enough recipients given to this mailing. </span>
+                                </strong>
+                            </div>
+                            <div class="o_mails_failed" attrs="{'invisible': ['|', ('state', '!=', 'done'), ('failed', '=', 0)]}">
+                                <button class="btn-link py-0"
+                                        name="action_view_traces_failed"
+                                        type="object">
+                                    <strong>
+                                        <field name="failed" class="oe_inline me-2"/>
+                                        <span name="failed_text">emails could not be sent.</span>
+                                </strong>
+                                </button>
+                            </div>
+                            <div class="o_mails_in_queue" attrs="{'invisible': [('state', '!=', 'in_queue')]}">
+                                <strong>
+                                    <span name="next_departure_text">This mailing is scheduled for </span>
+                                    <field name="next_departure" class="oe_inline"/>.
+                                </strong>
+                            </div>
+                            <div attrs="{'invisible': [('warning_message', '=', False)]}">
+                                <strong><field name="warning_message"/></strong>
+                            </div>
+                        </div>
                         <field name="state" readonly="1" widget="statusbar"/>
                     </header>
-                    <div class="alert alert-info mb-2 text-center" role="alert"
-                        attrs="{'invisible': ['&amp;','&amp;','&amp;','&amp;','&amp;',('state', '!=', 'in_queue'),('sent', '=', 0),('canceled', '=', 0),('scheduled', '=', 0),('failed', '=', 0),('warning_message', '=', False)]}">
-                        <div class="o_mails_canceled" attrs="{'invisible': [('canceled', '=', 0)]}">
-                            <button class="btn-link py-0"
-                                    name="action_view_traces_canceled"
-                                    type="object">
-                                <strong>
-                                    <field name="canceled" class="oe_inline me-2"/>
-                                    <span name="canceled_text">emails have been canceled and will not be sent.</span>
-                                </strong>
-                            </button>
-                        </div>
-                        <div class="o_mails_scheduled" attrs="{'invisible': [('scheduled', '=', 0)]}">
-                            <button class="btn-link py-0"
-                                    name="action_view_traces_scheduled"
-                                    type="object">
-                                <strong>
-                                    <field name="scheduled" class="oe_inline me-2"/>
-                                    <span name="scheduled_text">emails are in queue and will be sent soon.</span>
-                                </strong>
-                            </button>
-                        </div>
-                        <div class="o_mails_sent" attrs="{'invisible': ['&amp;', ('sent', '=', 0), ('state', 'in', ('draft', 'test', 'in_queue'))]}">
-                            <button class="btn-link py-0"
-                                    name="action_view_traces_sent"
-                                    type="object">
-                                <strong>
-                                    <field name="sent" class="oe_inline me-2"/>
-                                    <span name="sent">emails have been sent.</span>
-                                </strong>
-                            </button>
-                        </div>
-                        <div class="o_mails_failed" attrs="{'invisible': ['|', ('state', '!=', 'done'), ('failed', '=', 0)]}">
-                            <button class="btn-link py-0"
-                                    name="action_view_traces_failed"
-                                    type="object">
-                                <strong>
-                                    <field name="failed" class="oe_inline me-2"/>
-                                    <span name="failed_text">emails could not be sent.</span>
-                                </strong>
-                            </button>
-                        </div>
-                        <div class="o_mails_in_queue" attrs="{'invisible': [('state', '!=', 'in_queue')]}">
-                            <strong>
-                                <span name="next_departure_text">This mailing is scheduled for </span>
-                                <field name="next_departure" class="oe_inline"/>.
-                            </strong>
-                        </div>
-                        <div attrs="{'invisible': [('warning_message', '=', False)]}">
-                            <strong><field name="warning_message"/></strong>
-                        </div>
-                    </div>
-
                     <sheet>
                         <div class="oe_button_box" name="button_box">
                             <button name="action_view_delivered"
@@ -274,22 +276,21 @@
                                             attrs="{'required': [('ab_testing_enabled', '=', True), ('mailing_type', '=', 'mail')], 'invisible': ['|', ('ab_testing_enabled', '=', False), ('mailing_type', '!=', 'mail')], 'readonly': [('state', '!=', 'draft')]}"/>
                                         <field name="ab_testing_schedule_datetime"
                                             attrs="{'required': [('ab_testing_enabled', '=', True), ('ab_testing_winner_selection', '!=', 'manual')], 'readonly': ['|', ('ab_testing_enabled', '=', False), ('state', '!=', 'draft')], 'invisible': ['|', ('ab_testing_enabled', '=', False), ('ab_testing_winner_selection', '=', 'manual')]}"/>
+                                        <field name="is_ab_test_sent" invisible="1"/>
                                     </group>
                                     <div>
                                         <field name="ab_testing_mailings_count" invisible="1"/>
                                         <field name="ab_testing_completed" invisible="1"/>
                                         <field name="ab_testing_description" nolabel="1"/>
-                                        <div attrs="{'invisible': ['|', ('ab_testing_mailings_count', '&lt;', 2), ('ab_testing_enabled', '=', False)]}">
+                                        <div id="mailing_form_ab_buttons" attrs="{'invisible': ['|', ('ab_testing_mailings_count', '&lt;', 2), ('ab_testing_enabled', '=', False)]}">
                                             <button name="action_compare_versions" type="object" class="btn btn-link d-block">
                                                 <i class="fa fa-bar-chart"/> Compare Version
                                             </button>
                                             <button name="action_duplicate" type="object" class="btn btn-link d-block" attrs="{'invisible': [('ab_testing_completed', '=', True)]}">
                                                 <i class="fa fa-copy"/> Create an Alternative
                                             </button>
-                                            <button name="action_send_winner_mailing" type="object" class="btn btn-link d-block" attrs="{'invisible': [('ab_testing_completed', '=', True)]}">
-                                                <i class="fa fa-envelope"/> <span name="ab_test_manual" attrs="{'invisible': [('ab_testing_winner_selection', '!=', 'manual')]}">
-                                                    Send this version to remaining recipients
-                                                </span> <span name="ab_test_auto" attrs="{'invisible': [('ab_testing_winner_selection', '=', 'manual')]}">
+                                            <button name="action_send_winner_mailing" type="object" class="btn btn-link d-block" attrs="{'invisible': ['|', ('is_ab_test_sent', '!=', True), '|', ('ab_testing_completed', '=', True), ('ab_testing_winner_selection', '=', 'manual')]}">
+                                                <i class="fa fa-envelope"/><span name="ab_test_auto">
                                                     Send Winner Now
                                                 </span>
                                             </button>
diff --git a/addons/mass_mailing_sms/models/mailing_mailing.py b/addons/mass_mailing_sms/models/mailing_mailing.py
index 14ae27c23e8..3d1ba768b43 100644
--- a/addons/mass_mailing_sms/models/mailing_mailing.py
+++ b/addons/mass_mailing_sms/models/mailing_mailing.py
@@ -52,6 +52,7 @@ class Mailing(models.Model):
     ab_testing_sms_winner_selection = fields.Selection(
         related="campaign_id.ab_testing_sms_winner_selection",
         default="clicks_ratio", readonly=False, copy=True)
+    ab_testing_mailings_sms_count = fields.Integer(related="campaign_id.ab_testing_mailings_sms_count")
 
     @api.depends('mailing_type')
     def _compute_medium_id(self):
@@ -337,6 +338,7 @@ class Mailing(models.Model):
         values = super()._get_ab_testing_description_values()
         if self.mailing_type == 'sms':
             values.update({
+                'ab_testing_count': self.ab_testing_mailings_sms_count,
                 'ab_testing_winner_selection': self.ab_testing_sms_winner_selection,
             })
         return values
diff --git a/addons/mass_mailing_sms/views/mailing_mailing_views.xml b/addons/mass_mailing_sms/views/mailing_mailing_views.xml
index 877f9970f4f..7b023ea278a 100644
--- a/addons/mass_mailing_sms/views/mailing_mailing_views.xml
+++ b/addons/mass_mailing_sms/views/mailing_mailing_views.xml
@@ -159,6 +159,9 @@
                     ('mail_server_available', '=', False)], 'readonly': [('state', 'in', ('sending', 'done'))]}</attribute>
             </xpath>
             <!-- A/B Testing -->
+            <xpath expr="//field[@name='ab_testing_mailings_count']" position="after">
+                <field name="ab_testing_mailings_sms_count" invisible="1"/>
+            </xpath>
             <xpath expr="//field[@name='ab_testing_winner_selection']" position="after">
                 <label for="ab_testing_sms_winner_selection" string="Winner Selection"
                     attrs="{'invisible': ['|', ('ab_testing_enabled', '=', False), ('mailing_type', '!=', 'sms')]}"/>
@@ -169,19 +172,21 @@
                  <field name="ab_testing_schedule_datetime"
                         attrs="{'required': [('ab_testing_enabled', '=', True), ('ab_testing_winner_selection', '!=', 'manual'), ('ab_testing_sms_winner_selection', '!=', 'manual')], 'readonly': ['|', ('ab_testing_enabled', '=', False), ('state', '!=', 'draft')], 'invisible': ['|', '|', ('ab_testing_enabled', '=', False), ('ab_testing_winner_selection', '=', 'manual'), ('ab_testing_sms_winner_selection', '=', 'manual')]}"/>
             </xpath>
-            <xpath expr="//span[@name='ab_test_manual']" position="attributes">
-                <attribute name="attrs">{'invisible': ['|', ('ab_testing_winner_selection', '!=', 'manual'),
-                    ('ab_testing_sms_winner_selection', '!=', 'manual')]}</attribute>
+            <xpath expr="//div[@id='mailing_form_ab_buttons']" position="attributes">
+                <attribute name="attrs">{'invisible': ['|', ('ab_testing_enabled', '=', False), '&amp;',
+                    ('ab_testing_mailings_count', '&lt;', 2),
+                    ('ab_testing_mailings_sms_count', '&lt;', 2)]}</attribute>
             </xpath>
-            <xpath expr="//span[@name='ab_test_auto']" position="attributes">
-                <attribute name="attrs">{'invisible': [('ab_testing_winner_selection', '=', 'manual'),
-                    ('ab_testing_sms_winner_selection', '=', 'manual')]}</attribute>
-            </xpath>
-            <xpath expr="//button[@name='action_select_as_winner']" position="attributes">
-                <attribute name="attrs">{'invisible': ['|', ('ab_testing_completed', '!=', False), '|',
+            <xpath expr="//button[@name='action_send_winner_mailing']" position="attributes">
+                <attribute name="attrs">{'invisible': ['|', ('is_ab_test_sent', '!=', True), '|', ('ab_testing_completed', '=', True), '|',
                     ('ab_testing_winner_selection', '=', 'manual'),
                     ('ab_testing_sms_winner_selection', '=', 'manual')]}</attribute>
             </xpath>
+            <xpath expr="//button[@name='action_duplicate'][hasclass('btn-primary')]" position="attributes">
+                <attribute name="attrs">{'invisible': ['|', '|', ('ab_testing_enabled', '=', False),
+                    ('ab_testing_mailings_count', '&gt;=', 2),
+                    ('ab_testing_mailings_sms_count', '&gt;=', 2)]}</attribute>
+            </xpath>
         </field>
     </record>
 
diff --git a/addons/utm/models/utm_source.py b/addons/utm/models/utm_source.py
index ed25b946bf3..4c3a4fe82e9 100644
--- a/addons/utm/models/utm_source.py
+++ b/addons/utm/models/utm_source.py
@@ -82,5 +82,6 @@ class UtmSourceMixin(models.AbstractModel):
     def copy(self, default=None):
         """Increment the counter when duplicating the source."""
         default = default or {}
-        default['name'] = self.env['utm.mixin']._get_unique_names(self._name, [self.name])[0]
+        default_name = default.get('name')
+        default['name'] = self.env['utm.mixin']._get_unique_names(self._name, [default_name or self.name])[0]
         return super().copy(default)