diff --git a/addons/calendar/models/__init__.py b/addons/calendar/models/__init__.py
index 06a98e823e5..e83190ac8a0 100644
--- a/addons/calendar/models/__init__.py
+++ b/addons/calendar/models/__init__.py
@@ -7,3 +7,4 @@ from . import res_partner
 from . import mail_message
 from . import calendar
 from . import mail_activity
+from . import res_users
diff --git a/addons/calendar/models/res_users.py b/addons/calendar/models/res_users.py
new file mode 100644
index 00000000000..4d8cc0dd8e7
--- /dev/null
+++ b/addons/calendar/models/res_users.py
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import datetime
+
+from odoo import api, fields, models, modules, _
+
+
+class Users(models.Model):
+    _inherit = 'res.users'
+
+    def _systray_get_calendar_event_domain(self):
+        start_dt = datetime.datetime.utcnow()
+        start_date = datetime.date.today()
+        end_dt = datetime.datetime.combine(start_date, datetime.time.max)
+
+        return ['&', '|',
+                '&',
+                    '|', ['start', '>=', fields.Datetime.to_string(start_dt)], ['stop', '>=', fields.Datetime.to_string(start_dt)],
+                    ['start', '<=', fields.Datetime.to_string(end_dt)],
+                '&', ['allday', '=', True], ['start_date', '=', fields.Date.to_string(start_date)],
+                '&', ('attendee_ids.partner_id', '=', self.env.user.partner_id.id), ('attendee_ids.state', '!=', 'declined')]
+
+    @api.model
+    def systray_get_activities(self):
+        res = super(Users, self).systray_get_activities()
+
+        meetings_lines = self.env['calendar.event'].search_read(
+            self._systray_get_calendar_event_domain(),
+            ['id', 'start', 'name', 'allday'],
+            order='start')
+        if meetings_lines:
+            meeting_label = _("Today's Meetings")
+            meetings_systray = {
+                'type': 'meeting',
+                'name': meeting_label,
+                'model': 'calendar.event',
+                'icon': modules.module.get_module_icon(self.env['calendar.event']._original_module),
+                'meetings': meetings_lines,
+            }
+            res.insert(0, meetings_systray)
+
+        return res
diff --git a/addons/calendar/static/src/js/systray.js b/addons/calendar/static/src/js/systray.js
new file mode 100644
index 00000000000..f0ad7b35304
--- /dev/null
+++ b/addons/calendar/static/src/js/systray.js
@@ -0,0 +1,79 @@
+odoo.define('calendar.systray', function (require) {
+"use strict";
+
+var ActivityMenu = require('mail.systray').ActivityMenu;
+var fieldUtils = require('web.field_utils');
+
+ActivityMenu.include({
+    events: _.extend({}, ActivityMenu.prototype.events, {
+        'click .o_meeting_filter': '_onMeetingFilterClick'
+    }),
+
+    //-----------------------------------------
+    // Private
+    //-----------------------------------------
+
+    /**
+     * parse date to server value
+     *
+     * @private
+     * @override
+     */
+    _getActivityData: function () {
+        var self = this;
+        return this._super.apply(this, arguments).then(function () {
+            var meeting = _.find(self.activities, {type: 'meeting'});
+            if (meeting && meeting.meetings)  {
+                _.each(meeting.meetings, function (res) {
+                    res.start = fieldUtils.parse.datetime(res.start, false, {isUTC: true});
+                });
+            }
+        });
+    },
+
+    //-----------------------------------------
+    // Handlers
+    //-----------------------------------------
+
+    /**
+     * @private
+     * @override
+     */
+    _onActivityFilterClick: function (ev) {
+        var $el = $(ev.currentTarget);
+        var data = _.extend({}, $el.data());
+        if (data.res_model === "calendar.event" && data.filter === "my") {
+            this.do_action('calendar.action_calendar_event', {
+                additional_context: {
+                    default_mode: 'day',
+                    search_default_mymeetings: 1,
+                }
+            });
+        } else {
+            this._super.apply(this, arguments);
+        }
+    },
+
+    /**
+     * When particular meeting clicked, open particular meeting in form view
+     *
+     * @private
+     * @param {MouseEvent} ev
+     */
+    _onMeetingFilterClick: function (ev) {
+        ev.stopPropagation();
+        var $el = $(ev.currentTarget);
+        var data = _.extend({}, $el.data());
+        if (data.res_model === "calendar.event") {
+            this.do_action({
+                type: 'ir.actions.act_window',
+                name: data.model_name,
+                res_model:  data.res_model,
+                res_id: data.res_id,
+                views: [[false, 'form'], [false, 'calendar'], [false, 'list']],
+            });
+        }
+    },
+});
+
+});
diff --git a/addons/calendar/static/src/scss/calendar.scss b/addons/calendar/static/src/scss/calendar.scss
index a74eec477db..6d75477cfb6 100644
--- a/addons/calendar/static/src/scss/calendar.scss
+++ b/addons/calendar/static/src/scss/calendar.scss
@@ -77,3 +77,16 @@
         color: $brand-danger;
     }
 }
+.o_meeting_filter {
+    @include text-overflow();
+    width: 64%;
+    color: grey;
+    display: inline-block;
+    vertical-align: top;
+    &:hover {
+        color: $o-brand-optional;
+    }
+    &.o_meeting_bold {
+        font-weight: bold;
+    }
+}
diff --git a/addons/calendar/static/src/xml/base_calendar.xml b/addons/calendar/static/src/xml/base_calendar.xml
index ac6bfcd2945..56d10a45afe 100644
--- a/addons/calendar/static/src/xml/base_calendar.xml
+++ b/addons/calendar/static/src/xml/base_calendar.xml
@@ -20,4 +20,29 @@
         </t>
     </t>
 
+    <t t-extend="mail.chat.ActivityMenuPreview">
+        <t t-jquery="div.o_channel_title" t-operation="after">
+            <div t-if="activity and activity.type == 'meeting'">
+                <t t-set="is_next_meeting" t-value="true"/>
+                <t t-foreach="activity.meetings" t-as="meeting">
+                    <div>
+                        <span t-att-class="!meeting.allday and is_next_meeting ? 'o_meeting_filter o_meeting_bold' : 'o_meeting_filter'" t-att-data-res_model="activity.model" t-att-data-res_id="meeting.id" t-att-data-model_name="activity.name" t-att-title="meeting.name">
+                            <span t-if="!meeting.allday">
+                                <t t-esc="moment(meeting.start).local().format('hh:mm A')"/>
+                            </span>
+                            <span><t t-esc="meeting.name"/></span>
+                        </span>
+                        <span t-if="meeting.start" class="pull-right">
+                            <t t-if="meeting.allday">All Day</t>
+                            <t t-else=''>
+                                <t t-set="is_next_meeting" t-value="false"/>
+                                <t t-esc="moment(meeting.start).fromNow()"/>
+                            </t>
+                        </span>
+                    </div>
+                </t>
+            </div>
+        </t>
+    </t>
+
 </template>
diff --git a/addons/calendar/static/tests/systray_tests.js b/addons/calendar/static/tests/systray_tests.js
new file mode 100644
index 00000000000..072a1b5f4f1
--- /dev/null
+++ b/addons/calendar/static/tests/systray_tests.js
@@ -0,0 +1,77 @@
+odoo.define('calendar.systray_tests', function (require) {
+"use strict";
+
+var ChatManager = require('mail.ChatManager');
+var systray = require('mail.systray');
+var testUtils = require('web.test_utils');
+var createBusService = require('mail.testUtils').createBusService;
+
+
+QUnit.module('calendar', {}, function () {
+
+QUnit.module('ActivityMenu', {
+    beforeEach: function () {
+        this.services = [ChatManager, createBusService()];
+        this.data = {
+            'calendar.event': {
+                records: [{
+                    name: "Today's meeting (3)",
+                    model: "calendar.event",
+                    type: 'meeting',
+                    meetings: [{
+                        id: 1,
+                        res_model: "calendar.event",
+                        name: "meeting1",
+                        start: "2018-04-20 06:30:00",
+                        allday: false,
+                    },{
+                        id: 2,
+                        res_model: "calendar.event",
+                        name: "meeting2",
+                        start: "2018-04-20 09:30:00",
+                        allday: false,
+                    }]
+                }],
+            },
+        };
+    }
+});
+
+QUnit.test('activity menu widget:today meetings', function (assert) {
+    assert.expect(8);
+    var self = this;
+    var activityMenu = new systray.ActivityMenu();
+    testUtils.addMockEnvironment(activityMenu, {
+        services: this.services,
+        mockRPC: function (route, args) {
+            if (args.method === 'systray_get_activities') {
+                return $.when(self.data['calendar.event']['records']);
+            }
+            return this._super(route, args);
+        },
+    });
+
+    activityMenu.appendTo($('#qunit-fixture'));
+
+    assert.ok(activityMenu.$el.hasClass('o_mail_navbar_item'), 'should be the instance of widget');
+
+    testUtils.intercept(activityMenu, 'do_action', function (event) {
+        assert.ok(true, "should have triggered a do_action");
+        assert.strictEqual(event.data.action.res_id,  activityMenu.$('.o_meeting_filter').eq(0).data('res_id'), 'should open particular meeting form view')
+    });
+    activityMenu.$('.dropdown-toggle').click();
+    activityMenu.$('.o_meeting_filter').eq(0).click();
+
+    testUtils.intercept(activityMenu, 'do_action', function (event) {
+        assert.strictEqual(event.data.action,  "calendar.action_calendar_event", 'should open meeting calendar view in day mode')
+    });
+    activityMenu.$('.o_mail_channel_preview').click();
+
+    assert.ok(activityMenu.$('.o_meeting_filter'), "should be a meeting");
+    assert.strictEqual(activityMenu.$('.o_meeting_filter').length, 2, 'there should be 2 meetings');
+    assert.strictEqual(activityMenu.$('.o_meeting_filter').eq(0).hasClass('o_meeting_bold'), true, 'this meeting is yet to start');
+    assert.strictEqual(activityMenu.$('.o_meeting_filter').eq(1).hasClass('o_meeting_bold'), false, 'this meeting has been started');
+    activityMenu.destroy();
+});
+});
+});
diff --git a/addons/calendar/views/calendar_templates.xml b/addons/calendar/views/calendar_templates.xml
index c963102eee2..2c9660de77e 100644
--- a/addons/calendar/views/calendar_templates.xml
+++ b/addons/calendar/views/calendar_templates.xml
@@ -5,12 +5,14 @@
             <link rel="stylesheet" type="text/scss" href="/calendar/static/src/scss/calendar.scss"/>
             <script type="text/javascript" src="/calendar/static/src/js/base_calendar.js"></script>
             <script type="text/javascript" src="/calendar/static/src/js/mail_activity.js"></script>
+            <script type="text/javascript" src="/calendar/static/src/js/systray.js"></script>
         </xpath>
     </template>
 
     <template id="qunit_suite" inherit_id="web.qunit_suite">
         <xpath expr="//script[last()]" position="after">
             <script type="text/javascript" src="/calendar/static/tests/calendar_tests.js"/>
+            <script type="text/javascript" src="/calendar/static/tests/systray_tests.js"/>
         </xpath>
     </template>
 
diff --git a/addons/calendar/views/calendar_views.xml b/addons/calendar/views/calendar_views.xml
index 80994d946fa..cb17b894f79 100644
--- a/addons/calendar/views/calendar_views.xml
+++ b/addons/calendar/views/calendar_views.xml
@@ -321,6 +321,42 @@
         </field>
     </record>
 
+<!--     <record id="view_calendar_today_event_calendar" model="ir.ui.view">
+        <field name="name">calendar.event.calendar</field>
+        <field name="model">calendar.event</field>
+        <field name="priority" eval="2"/>
+        <field name="arch" type="xml">
+            <calendar string="Meetings" date_start="start" date_stop="stop" date_delay="duration" all_day="allday"
+                readonly_form_view_id="%(calendar.view_calendar_event_form_popup)s"
+                event_open_popup="true"
+                event_limit="3"
+                color="partner_id"
+                mode="day">
+                <field name="name"/>
+                <field name="partner_ids" write_model="calendar.contacts" write_field="partner_id" avatar_field="image_small"/>
+                <field name="is_highlighted" invisible="1"/>
+            </calendar>
+        </field>
+    </record> -->
+
+<!--     <record id="action_today_calendar_event" model="ir.actions.act_window">
+        <field name="name">Today's Meetings</field>
+        <field name="res_model">calendar.event</field>
+        <field name="view_mode">calendar,tree,form</field>
+        <field name="view_id" ref="view_calendar_today_event_calendar"/>
+        <field name="search_view_id" ref="view_calendar_event_search"/>
+        <field name="context">{'search_default_mymeetings': 1}</field>
+        <field name="help" type="html">
+            <p class="o_view_nocontent_smiling_face">
+                Schedule a new meeting
+            </p><p>
+                The calendar is shared between employees and fully integrated with
+                other applications such as the employee leaves or the business
+                opportunities.
+            </p>
+        </field>
+    </record> -->
+
     <record id="action_view_calendar_event_calendar" model="ir.actions.act_window.view">
         <field name="act_window_id" ref="action_calendar_event"/>
         <field name="sequence" eval="1"/>
diff --git a/addons/mail/models/res_users.py b/addons/mail/models/res_users.py
index af2cea3c0fe..f9ebd21eb1b 100644
--- a/addons/mail/models/res_users.py
+++ b/addons/mail/models/res_users.py
@@ -98,6 +98,7 @@ class Users(models.Model):
                 user_activities[activity['model']] = {
                     'name': model_names[activity['id']],
                     'model': activity['model'],
+                    'type': 'activity',
                     'icon': modules.module.get_module_icon(self.env[activity['model']]._original_module),
                     'total_count': 0, 'today_count': 0, 'overdue_count': 0, 'planned_count': 0,
                 }
diff --git a/addons/mail/static/src/js/systray.js b/addons/mail/static/src/js/systray.js
index e5f8c870562..a22bbed3a60 100644
--- a/addons/mail/static/src/js/systray.js
+++ b/addons/mail/static/src/js/systray.js
@@ -180,9 +180,8 @@ var ActivityMenu = Widget.extend({
         return self._rpc({
             model: 'res.users',
             method: 'systray_get_activities',
-            kwargs: {
-                context: session.user_context,
-            },
+            args: [],
+            kwargs: {context: session.user_context},
         }).then(function (data) {
             self.activities = data;
             self.activityCounter = _.reduce(data, function (total_count, p_data) { return total_count + p_data.total_count; }, 0);
diff --git a/addons/mail/static/src/scss/systray.scss b/addons/mail/static/src/scss/systray.scss
index fd799cb9cc7..b0ed61e140f 100644
--- a/addons/mail/static/src/scss/systray.scss
+++ b/addons/mail/static/src/scss/systray.scss
@@ -67,10 +67,11 @@
 
             @media (min-width: $screen-sm-min) {
                 .o_mail_channel_preview {
-                    height: 50px;
+                    min-height: 50px;
                     padding: 5px;
                     .o_mail_channel_image {
                         width: 40px;
+                        height: 40px;
                     }
                     .o_channel_info {
                         margin-left: 10px;
diff --git a/addons/mail/static/src/xml/systray.xml b/addons/mail/static/src/xml/systray.xml
index 54df73c1b94..a6e52ab555a 100644
--- a/addons/mail/static/src/xml/systray.xml
+++ b/addons/mail/static/src/xml/systray.xml
@@ -69,7 +69,7 @@
                             <t t-esc="activity.name"/>
                         </span>
                     </div>
-                    <div>
+                    <div t-if="activity and activity.type == 'activity'">
                         <button t-if="activity.overdue_count" type="button" class="btn btn-link o_activity_filter_button mr16" t-att-data-res_model="activity.model" t-att-data-model_name="activity.name" data-filter='overdue'><t t-esc="activity.overdue_count"/> Late </button>
                         <span t-if="!activity.overdue_count" class="o_no_activity mr16">0 Late </span>
                         <button t-if="activity.today_count" type="button" class="btn btn-link o_activity_filter_button mr16" t-att-data-res_model="activity.model" t-att-data-model_name="activity.name" data-filter='today'> <t t-esc="activity.today_count"/> Today </button>
diff --git a/addons/mail/static/tests/systray_tests.js b/addons/mail/static/tests/systray_tests.js
index c27a2978fb0..b30b5e7b279 100644
--- a/addons/mail/static/tests/systray_tests.js
+++ b/addons/mail/static/tests/systray_tests.js
@@ -20,6 +20,7 @@ QUnit.module('ActivityMenu', {
                 fields: {
                     name: { type: "char" },
                     model: { type: "char" },
+                    type: { type: "char" },
                     planned_count: { type: "integer"},
                     today_count: { type: "integer"},
                     overdue_count: { type: "integer"},
@@ -28,6 +29,7 @@ QUnit.module('ActivityMenu', {
                 records: [{
                         name: "Contact",
                         model: "res.partner",
+                        type: "activity",
                         planned_count: 0,
                         today_count: 1,
                         overdue_count: 0,
@@ -35,6 +37,7 @@ QUnit.module('ActivityMenu', {
                     },
                     {
                         name: "Task",
+                        type: "activity",
                         model: "project.task",
                         planned_count: 1,
                         today_count: 0,
@@ -43,6 +46,7 @@ QUnit.module('ActivityMenu', {
                     },
                     {
                         name: "Issue",
+                        type: "activity",
                         model: "project.issue",
                         planned_count: 1,
                         today_count: 1,
diff --git a/addons/note/models/res_users.py b/addons/note/models/res_users.py
index 6f248c47664..d1bca02e65c 100644
--- a/addons/note/models/res_users.py
+++ b/addons/note/models/res_users.py
@@ -63,6 +63,7 @@ GROUP BY id"""
                 activities[note_index]['name'] = note_label
             else:
                 activities.append({
+                    'type': 'activity',
                     'name': note_label,
                     'model': 'note.note',
                     'icon': modules.module.get_module_icon(self.env['note.note']._original_module),
diff --git a/addons/web/static/src/js/views/calendar/calendar_view.js b/addons/web/static/src/js/views/calendar/calendar_view.js
index 6c12d508937..c770c9eb642 100644
--- a/addons/web/static/src/js/views/calendar/calendar_view.js
+++ b/addons/web/static/src/js/views/calendar/calendar_view.js
@@ -152,7 +152,7 @@ var CalendarView = AbstractView.extend({
         this.loadParams.fieldColor = attrs.color;
 
         this.loadParams.filters = filters;
-        this.loadParams.mode = attrs.mode;
+        this.loadParams.mode = (params.context && params.context.default_mode) || attrs.mode;
         this.loadParams.initialDate = moment(params.initialDate || new Date());
     },
 });