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..83cd32db080 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"