diff --git a/Outlook2013TodoAddIn/AppointmentsControl.Designer.cs b/Outlook2013TodoAddIn/AppointmentsControl.Designer.cs
index 6e4bca2..62b649d 100644
--- a/Outlook2013TodoAddIn/AppointmentsControl.Designer.cs
+++ b/Outlook2013TodoAddIn/AppointmentsControl.Designer.cs
@@ -40,15 +40,18 @@
             this.lstTasks = new System.Windows.Forms.ListView();
             this.columnHeader3 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
             this.columnHeader4 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
+            this.ctxMenuTasks = new System.Windows.Forms.ContextMenuStrip(this.components);
             this.panelCalendar = new System.Windows.Forms.Panel();
             this.apptCalendar = new Outlook2013TodoAddIn.CustomCalendar();
-            this.ctxMenuTasks = new System.Windows.Forms.ContextMenuStrip(this.components);
+            this.mnuItemMarkComplete = new System.Windows.Forms.ToolStripMenuItem();
+            this.mnuItemDeleteTask = new System.Windows.Forms.ToolStripMenuItem();
             this.ctxMenuAppointments.SuspendLayout();
             this.panel1.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).BeginInit();
             this.splitContainer1.Panel1.SuspendLayout();
             this.splitContainer1.Panel2.SuspendLayout();
             this.splitContainer1.SuspendLayout();
+            this.ctxMenuTasks.SuspendLayout();
             this.panelCalendar.SuspendLayout();
             this.SuspendLayout();
             // 
@@ -58,20 +61,20 @@
             this.mnuItemReplyAllEmail,
             this.mnuItemDeleteAppointment});
             this.ctxMenuAppointments.Name = "ctxMenuAppointments";
-            this.ctxMenuAppointments.Size = new System.Drawing.Size(225, 52);
+            this.ctxMenuAppointments.Size = new System.Drawing.Size(227, 52);
             // 
             // mnuItemReplyAllEmail
             // 
             this.mnuItemReplyAllEmail.Name = "mnuItemReplyAllEmail";
-            this.mnuItemReplyAllEmail.Size = new System.Drawing.Size(224, 24);
+            this.mnuItemReplyAllEmail.Size = new System.Drawing.Size(226, 24);
             this.mnuItemReplyAllEmail.Text = "Reply All With Email";
             this.mnuItemReplyAllEmail.Click += new System.EventHandler(this.mnuItemReplyAllEmail_Click);
             // 
             // mnuItemDeleteAppointment
             // 
             this.mnuItemDeleteAppointment.Name = "mnuItemDeleteAppointment";
-            this.mnuItemDeleteAppointment.Size = new System.Drawing.Size(224, 24);
-            this.mnuItemDeleteAppointment.Text = "Delete appointment/s";
+            this.mnuItemDeleteAppointment.Size = new System.Drawing.Size(226, 24);
+            this.mnuItemDeleteAppointment.Text = "Delete Appointment/s";
             this.mnuItemDeleteAppointment.Click += new System.EventHandler(this.mnuItemDeleteAppointment_Click);
             // 
             // panel1
@@ -169,6 +172,14 @@
             this.columnHeader4.Text = "Subject";
             this.columnHeader4.Width = 200;
             // 
+            // ctxMenuTasks
+            // 
+            this.ctxMenuTasks.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.mnuItemMarkComplete,
+            this.mnuItemDeleteTask});
+            this.ctxMenuTasks.Name = "ctxMenuTasks";
+            this.ctxMenuTasks.Size = new System.Drawing.Size(181, 80);
+            // 
             // panelCalendar
             // 
             this.panelCalendar.Controls.Add(this.apptCalendar);
@@ -202,10 +213,19 @@
             this.apptCalendar.SelectedDateChanged += new System.EventHandler(this.apptCalendar_SelectedDateChanged);
             this.apptCalendar.ConfigurationButtonClicked += new System.EventHandler(this.apptCalendar_ConfigurationButtonClicked);
             // 
-            // ctxMenuTasks
+            // mnuItemMarkComplete
             // 
-            this.ctxMenuTasks.Name = "ctxMenuTasks";
-            this.ctxMenuTasks.Size = new System.Drawing.Size(61, 4);
+            this.mnuItemMarkComplete.Name = "mnuItemMarkComplete";
+            this.mnuItemMarkComplete.Size = new System.Drawing.Size(180, 24);
+            this.mnuItemMarkComplete.Text = "Mark Complete";
+            this.mnuItemMarkComplete.Click += new System.EventHandler(this.mnuItemMarkComplete_Click);
+            // 
+            // mnuItemDeleteTask
+            // 
+            this.mnuItemDeleteTask.Name = "mnuItemDeleteTask";
+            this.mnuItemDeleteTask.Size = new System.Drawing.Size(180, 24);
+            this.mnuItemDeleteTask.Text = "Delete Task";
+            this.mnuItemDeleteTask.Click += new System.EventHandler(this.mnuItemDeleteTask_Click);
             // 
             // AppointmentsControl
             // 
@@ -220,6 +240,7 @@
             this.splitContainer1.Panel2.ResumeLayout(false);
             ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).EndInit();
             this.splitContainer1.ResumeLayout(false);
+            this.ctxMenuTasks.ResumeLayout(false);
             this.panelCalendar.ResumeLayout(false);
             this.ResumeLayout(false);
 
@@ -241,6 +262,8 @@
         private System.Windows.Forms.Panel panelCalendar;
         private System.Windows.Forms.ToolStripMenuItem mnuItemDeleteAppointment;
         private System.Windows.Forms.ContextMenuStrip ctxMenuTasks;
+        private System.Windows.Forms.ToolStripMenuItem mnuItemMarkComplete;
+        private System.Windows.Forms.ToolStripMenuItem mnuItemDeleteTask;
 
 
     }
diff --git a/Outlook2013TodoAddIn/AppointmentsControl.cs b/Outlook2013TodoAddIn/AppointmentsControl.cs
index b87aee8..94290d4 100644
--- a/Outlook2013TodoAddIn/AppointmentsControl.cs
+++ b/Outlook2013TodoAddIn/AppointmentsControl.cs
@@ -65,6 +65,11 @@ namespace Outlook2013TodoAddIn
         /// </summary>
         public bool ShowTasks { get; set; }
 
+        /// <summary>
+        /// Gets/sets whether to show the completed tasks in the list
+        /// </summary>
+        public bool ShowCompletedTasks { get; set; }
+
         /// <summary>
         /// Gets/sets the first day of the week for the calendar
         /// </summary>
@@ -133,6 +138,12 @@ namespace Outlook2013TodoAddIn
                     // TODO: Shared calendars?
                 }
             }
+
+            if (!this.ShowCompletedTasks)
+            {
+                tasks = tasks.Where(t => !t.Completed).ToList();
+            }
+
             // We need to sort them because they may come from different accounts already ordered
             // Applies sorting by due date
             tasks.Sort(CompareTasks);
@@ -604,6 +615,86 @@ namespace Outlook2013TodoAddIn
             }
         }
 
+        /// <summary>
+        /// Allows to delete the selected task
+        /// </summary>
+        /// <param name="sender">Sender</param>
+        /// <param name="e">EventArgs</param>
+        private void mnuItemDeleteTask_Click(object sender, EventArgs e)
+        {
+            if (this.lstTasks.SelectedIndices.Count != 0)
+            {
+                OLTaskItem task = this.lstTasks.SelectedItems[0].Tag as OLTaskItem;
+                if (task != null)
+                {
+                    if (MessageBox.Show("Are you sure you want to delete this task?", "Delete task", MessageBoxButtons.YesNo) == DialogResult.Yes)
+                    {
+                        if (task.OriginalItem is Outlook.MailItem)
+                        {
+                            Outlook.MailItem mail = task.OriginalItem as Outlook.MailItem;
+                            mail.Delete();
+                        }
+                        else if (task.OriginalItem is Outlook.ContactItem)
+                        {
+                            Outlook.ContactItem contact = task.OriginalItem as Outlook.ContactItem;
+                            contact.Delete();
+                        }
+                        else if (task.OriginalItem is Outlook.TaskItem)
+                        {
+                            Outlook.TaskItem t = task.OriginalItem as Outlook.TaskItem;
+                            t.Delete();
+                        }
+                        else
+                        {
+                            // Do nothing
+                        }
+                    }
+                    // At the end, synchronously "refresh" tasks in case they have changed
+                    this.RetrieveTasks();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Allows to mark the selected task as completed (clear task flag for regular items)
+        /// </summary>
+        /// <param name="sender">Sender</param>
+        /// <param name="e">EventArgs</param>
+        private void mnuItemMarkComplete_Click(object sender, EventArgs e)
+        {
+            if (this.lstTasks.SelectedIndices.Count != 0)
+            {
+                OLTaskItem task = this.lstTasks.SelectedItems[0].Tag as OLTaskItem;
+                if (task != null && !task.Completed) // Attempting to complete an already completed task throws an exception
+                {
+                    if (MessageBox.Show("Are you sure you want to complete this task?", "Mark task as completed/Clear task flag", MessageBoxButtons.YesNo) == DialogResult.Yes)
+                    {
+                        if (task.OriginalItem is Outlook.MailItem)
+                        {
+                            Outlook.MailItem mail = task.OriginalItem as Outlook.MailItem;
+                            mail.ClearTaskFlag();
+                        }
+                        else if (task.OriginalItem is Outlook.ContactItem)
+                        {
+                            Outlook.ContactItem contact = task.OriginalItem as Outlook.ContactItem;
+                            contact.ClearTaskFlag();
+                        }
+                        else if (task.OriginalItem is Outlook.TaskItem)
+                        {
+                            Outlook.TaskItem t = task.OriginalItem as Outlook.TaskItem;
+                            t.MarkComplete();
+                        }
+                        else
+                        {
+                            // Do nothing
+                        }
+                    }
+                    // At the end, synchronously "refresh" tasks in case they have changed
+                    this.RetrieveTasks();
+                }
+            }
+        }
+
         /// <summary>
         /// Switch to the calendar view when double-clicking a date
         /// </summary>
@@ -639,6 +730,7 @@ namespace Outlook2013TodoAddIn
                     this.ShowDayNames = cfg.ShowDayNames;
                     this.ShowWeekNumbers = cfg.ShowWeekNumbers;
                     this.ShowTasks = cfg.ShowTasks;
+                    this.ShowCompletedTasks = cfg.ShowCompletedTasks;
                     this.FirstDayOfWeek = cfg.FirstDayOfWeek;
                     this.RetrieveData();
                 }
@@ -701,16 +793,23 @@ namespace Outlook2013TodoAddIn
                 });
 
             }
-            e.Graphics.DrawString(task.TaskSubject, new Font(this.Font, FontStyle.Bold), colorBrush, subjectRectangle, leftFormat);
+            Font mainFont = new Font(this.Font, FontStyle.Bold);
+            Font subFont = this.Font;
+            if (task.Completed)
+            {
+                mainFont = new Font(this.Font, FontStyle.Bold | FontStyle.Strikeout);
+                subFont = new Font(this.Font, FontStyle.Strikeout);
+            }
+            e.Graphics.DrawString(task.TaskSubject, mainFont, colorBrush, subjectRectangle, leftFormat);
             if (task.Reminder.Year != Constants.NullYear)
             {
                 e.Graphics.DrawImage(Properties.Resources.Alert_16xSM, reminderRectangle.Left, reminderRectangle.Top);
-                e.Graphics.DrawString(task.Reminder.ToString(), this.Font, colorBrush, reminderRectangle.Left + Properties.Resources.Alert_16xSM.Width + horizontalSpacing, reminderRectangle.Top, leftFormat);
+                e.Graphics.DrawString(task.Reminder.ToString(), subFont, colorBrush, reminderRectangle.Left + Properties.Resources.Alert_16xSM.Width + horizontalSpacing, reminderRectangle.Top, leftFormat);
             }
             else if (task.StartDate.Year != Constants.NullYear)
             {
                 e.Graphics.DrawImage(Properties.Resources.CurrentRow_15x14, reminderRectangle.Left, reminderRectangle.Top);
-                e.Graphics.DrawString(task.StartDate.ToShortDateString(), this.Font, colorBrush, reminderRectangle.Left + Properties.Resources.CurrentRow_15x14.Width + horizontalSpacing, reminderRectangle.Top, leftFormat);
+                e.Graphics.DrawString(task.StartDate.ToShortDateString(), subFont, colorBrush, reminderRectangle.Left + Properties.Resources.CurrentRow_15x14.Width + horizontalSpacing, reminderRectangle.Top, leftFormat);
             }
         }
 
diff --git a/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs b/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
index 5e8474f..bdb3b0a 100644
--- a/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
+++ b/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
@@ -47,6 +47,7 @@
             this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
             this.numRangeEmailAlertsTimeOut = new System.Windows.Forms.NumericUpDown();
             this.lblSeconds = new System.Windows.Forms.Label();
+            this.chkShowCompletedTasks = new System.Windows.Forms.CheckBox();
             ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.pctBoxPayPal)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.numRangeEmailAlertsTimeOut)).BeginInit();
@@ -244,6 +245,16 @@
             this.lblSeconds.TabIndex = 23;
             this.lblSeconds.Text = "seconds";
             // 
+            // chkShowCompletedTasks
+            // 
+            this.chkShowCompletedTasks.AutoSize = true;
+            this.chkShowCompletedTasks.Location = new System.Drawing.Point(157, 206);
+            this.chkShowCompletedTasks.Name = "chkShowCompletedTasks";
+            this.chkShowCompletedTasks.Size = new System.Drawing.Size(105, 21);
+            this.chkShowCompletedTasks.TabIndex = 24;
+            this.chkShowCompletedTasks.Text = "Completed?";
+            this.chkShowCompletedTasks.UseVisualStyleBackColor = true;
+            // 
             // FormConfiguration
             // 
             this.AcceptButton = this.btnOK;
@@ -251,6 +262,7 @@
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.CancelButton = this.btnCancel;
             this.ClientSize = new System.Drawing.Size(282, 482);
+            this.Controls.Add(this.chkShowCompletedTasks);
             this.Controls.Add(this.lblSeconds);
             this.Controls.Add(this.numRangeEmailAlertsTimeOut);
             this.Controls.Add(this.pctBoxPayPal);
@@ -305,5 +317,6 @@
         private System.Windows.Forms.ToolTip toolTip1;
         private System.Windows.Forms.NumericUpDown numRangeEmailAlertsTimeOut;
         private System.Windows.Forms.Label lblSeconds;
+        private System.Windows.Forms.CheckBox chkShowCompletedTasks;
     }
 }
\ No newline at end of file
diff --git a/Outlook2013TodoAddIn/Forms/FormConfiguration.cs b/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
index 0244e2e..589cf25 100644
--- a/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
+++ b/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
@@ -95,6 +95,15 @@ namespace Outlook2013TodoAddIn.Forms
             set { this.chkShowTasks.Checked = value; }
         }
 
+        /// <summary>
+        /// Gets/sets whether to show the completed tasks in the list
+        /// </summary>
+        public bool ShowCompletedTasks
+        {
+            get { return this.chkShowCompletedTasks.Checked; }
+            set { this.chkShowCompletedTasks.Checked = value; }
+        }
+
         /// <summary>
         /// Gets/sets the first day of the week for the calendar
         /// </summary>
@@ -131,6 +140,7 @@ namespace Outlook2013TodoAddIn.Forms
             this.chkShowDayNames.Checked = Properties.Settings.Default.ShowDayNames;
             this.chkShowWeekNumbers.Checked = Properties.Settings.Default.ShowWeekNumbers;
             this.chkShowTasks.Checked = Properties.Settings.Default.ShowTasks;
+            this.chkShowCompletedTasks.Checked = Properties.Settings.Default.ShowCompletedTasks;
             this.LoadStores();
             this.LoadDays();
         }
@@ -172,7 +182,7 @@ namespace Outlook2013TodoAddIn.Forms
             Properties.Settings.Default.ShowFriendlyGroupHeaders = this.chkFriendlyGroupHeaders.Checked;
             Properties.Settings.Default.ShowDayNames = this.chkShowDayNames.Checked;
             Properties.Settings.Default.ShowWeekNumbers = this.chkShowWeekNumbers.Checked;
-            Properties.Settings.Default.ShowTasks = this.chkShowTasks.Checked;
+            Properties.Settings.Default.ShowCompletedTasks = this.chkShowCompletedTasks.Checked;
             Properties.Settings.Default.FirstDayOfWeek = (System.DayOfWeek)Enum.Parse(typeof(System.DayOfWeek), this.cboFirstDayOfWeek.SelectedValue.ToString());
         }
 
diff --git a/Outlook2013TodoAddIn/OLTaskItem.cs b/Outlook2013TodoAddIn/OLTaskItem.cs
index f5bb331..47a076f 100644
--- a/Outlook2013TodoAddIn/OLTaskItem.cs
+++ b/Outlook2013TodoAddIn/OLTaskItem.cs
@@ -21,6 +21,8 @@ namespace Outlook2013TodoAddIn
         public object OriginalItem { get; set; }
         public List<string> Categories { get; set; }
 
+        public bool Completed { get; set; }
+
         #endregion "Properties"
 
         #region "Methods"
@@ -46,6 +48,7 @@ namespace Outlook2013TodoAddIn
                 MAPIFolder f = (MAPIFolder)mail.Parent;
                 this.FolderName = f.Name;
                 if (!String.IsNullOrEmpty(mail.Categories)) this.Categories.AddRange(mail.Categories.Split(new char[] { ',' }));
+                this.Completed = (mail.TaskCompletedDate.Year != Constants.NullYear);
             }
             else if (item is Outlook.ContactItem)
             {
@@ -58,6 +61,7 @@ namespace Outlook2013TodoAddIn
                 MAPIFolder f = (MAPIFolder)contact.Parent;
                 this.FolderName = f.Name;
                 if (!String.IsNullOrEmpty(contact.Categories)) this.Categories.AddRange(contact.Categories.Split(new char[] { ',' }));
+                this.Completed = (contact.TaskCompletedDate.Year != Constants.NullYear);
             }
             else if (item is Outlook.TaskItem)
             {
@@ -70,6 +74,7 @@ namespace Outlook2013TodoAddIn
                 MAPIFolder f = (MAPIFolder)task.Parent;
                 this.FolderName = f.Name;
                 if (!String.IsNullOrEmpty(task.Categories)) this.Categories.AddRange(task.Categories.Split(new char[] { ',' }));
+                this.Completed = task.Complete;
             }
             else
             {
diff --git a/Outlook2013TodoAddIn/Properties/Settings.Designer.cs b/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
index 0e575ba..a12d51a 100644
--- a/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
+++ b/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
@@ -177,5 +177,17 @@ namespace Outlook2013TodoAddIn.Properties {
                 this["ShowWeekNumbers"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("False")]
+        public bool ShowCompletedTasks {
+            get {
+                return ((bool)(this["ShowCompletedTasks"]));
+            }
+            set {
+                this["ShowCompletedTasks"] = value;
+            }
+        }
     }
 }
diff --git a/Outlook2013TodoAddIn/Properties/Settings.settings b/Outlook2013TodoAddIn/Properties/Settings.settings
index a5fd121..188de82 100644
--- a/Outlook2013TodoAddIn/Properties/Settings.settings
+++ b/Outlook2013TodoAddIn/Properties/Settings.settings
@@ -41,5 +41,8 @@
     <Setting Name="ShowWeekNumbers" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">False</Value>
     </Setting>
+    <Setting Name="ShowCompletedTasks" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/Outlook2013TodoAddIn/ThisAddIn.cs b/Outlook2013TodoAddIn/ThisAddIn.cs
index 0c8198e..4938fbc 100644
--- a/Outlook2013TodoAddIn/ThisAddIn.cs
+++ b/Outlook2013TodoAddIn/ThisAddIn.cs
@@ -49,6 +49,7 @@ namespace Outlook2013TodoAddIn
                 this.AppControl.ShowDayNames = Properties.Settings.Default.ShowDayNames;
                 this.AppControl.ShowWeekNumbers = Properties.Settings.Default.ShowWeekNumbers;
                 this.AppControl.ShowTasks = Properties.Settings.Default.ShowTasks;
+                this.AppControl.ShowCompletedTasks = Properties.Settings.Default.ShowCompletedTasks;
                 this.AppControl.FirstDayOfWeek = Properties.Settings.Default.FirstDayOfWeek;
                 this.AppControl.NumDays = Properties.Settings.Default.NumDays; // Setting the value will load the appointments
 
diff --git a/Outlook2013TodoAddIn/app.config b/Outlook2013TodoAddIn/app.config
index f85f66b..a56c192 100644
--- a/Outlook2013TodoAddIn/app.config
+++ b/Outlook2013TodoAddIn/app.config
@@ -43,6 +43,9 @@
       <setting name="ShowWeekNumbers" serializeAs="String">
         <value>False</value>
       </setting>
+      <setting name="ShowCompletedTasks" serializeAs="String">
+        <value>False</value>
+      </setting>
     </Outlook2013TodoAddIn.Properties.Settings>
   </userSettings>
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>