diff --git a/EnvelopeGenerator.Common/My Project/AssemblyInfo.vb b/EnvelopeGenerator.Common/My Project/AssemblyInfo.vb
index 9b4d76e6..4e19c511 100644
--- a/EnvelopeGenerator.Common/My Project/AssemblyInfo.vb	
+++ b/EnvelopeGenerator.Common/My Project/AssemblyInfo.vb	
@@ -31,5 +31,5 @@ Imports System.Runtime.InteropServices
 ' indem Sie "*" wie unten gezeigt eingeben:
 ' <Assembly: AssemblyVersion("1.0.*")>
 
-<Assembly: AssemblyVersion("1.5.0.0")>
-<Assembly: AssemblyFileVersion("1.5.0.0")>
+<Assembly: AssemblyVersion("1.6.0.0")>
+<Assembly: AssemblyFileVersion("1.6.0.0")>
diff --git a/EnvelopeGenerator.Common/Services/ActionService.vb b/EnvelopeGenerator.Common/Services/ActionService.vb
index b0b44291..e2b114b1 100644
--- a/EnvelopeGenerator.Common/Services/ActionService.vb
+++ b/EnvelopeGenerator.Common/Services/ActionService.vb
@@ -34,13 +34,13 @@ Public Class ActionService
         Return True
     End Function
 
-    Public Function DeleteEnvelope(pEnvelope As Envelope) As Boolean
+    Public Function DeleteEnvelope(pEnvelope As Envelope, pReason As String) As Boolean
         If HistoryService.SetEnvelopeStatus(pEnvelope, Constants.EnvelopeStatus.EnvelopeDeleted, pEnvelope.User.Email) = False Then
             Return False
         End If
 
         Dim oSendResult = pEnvelope.Receivers.
-            Select(Function(r) EmailService.SendEnvelopeDeletedEmail(pEnvelope, r)).
+            Select(Function(r) EmailService.SendEnvelopeDeletedEmail(pEnvelope, r, pReason)).
             All(Function(r) r = True)
 
         If oSendResult = False Then
diff --git a/EnvelopeGenerator.Common/Services/EmailService.vb b/EnvelopeGenerator.Common/Services/EmailService.vb
index b4fe38ec..dae37fea 100644
--- a/EnvelopeGenerator.Common/Services/EmailService.vb
+++ b/EnvelopeGenerator.Common/Services/EmailService.vb
@@ -15,14 +15,14 @@ Public Class EmailService
         EmailTemplate = New TemplateService(pState)
     End Sub
 
-    Public Function SendEnvelopeDeletedEmail(pEnvelope As Envelope, pReceiver As EnvelopeReceiver) As Boolean
+    Public Function SendEnvelopeDeletedEmail(pEnvelope As Envelope, pReceiver As EnvelopeReceiver, pReason As String) As Boolean
         Logger.Debug("Creating email data object.")
         Dim oEmailData As New EmailData(pEnvelope, pReceiver, Constants.EnvelopeStatus.MessageDeletionSent) With
         {
             .SignatureLink = ""
         }
 
-        EmailTemplate.FillEnvelopeDeletedEmailBody(oEmailData)
+        EmailTemplate.FillEnvelopeDeletedEmailBody(oEmailData, pReason)
 
         If EmailModel.Insert(oEmailData) = False Then
             Logger.Error("EMail data could not be inserted.")
diff --git a/EnvelopeGenerator.Common/Services/TemplateService.vb b/EnvelopeGenerator.Common/Services/TemplateService.vb
index 193e325c..4adab2a8 100644
--- a/EnvelopeGenerator.Common/Services/TemplateService.vb
+++ b/EnvelopeGenerator.Common/Services/TemplateService.vb
@@ -16,7 +16,7 @@ Public Class TemplateService
         EmailHtmlTemplateModel = New EmailTemplateModel(pState)
     End Sub
 
-    Private Sub InitDictionary(pEmailData As EmailData)
+    Private Sub InitDictionary(pEmailData As EmailData, Optional pReason As String = "")
         Logger.Debug("Initializing dictionary..")
 
         _replaceDictionary = New Dictionary(Of String, String) From {
@@ -28,7 +28,8 @@ Public Class TemplateService
             {"[LINK_TO_DOCUMENT_TEXT]", $"{pEmailData.SignatureLink.Truncate(40)}.."},
             {"[DOCUMENT_TITLE]", pEmailData.EnvelopeTitle},
             {"[MESSAGE]", pEmailData.Message},
-            {"[DOCUMENT_ACCESS_CODE]", pEmailData.ReceiverAccessCode}
+            {"[DOCUMENT_ACCESS_CODE]", pEmailData.ReceiverAccessCode},
+            {"[REASON]", pReason}
         }
     End Sub
 
@@ -40,11 +41,11 @@ Public Class TemplateService
         pEmailData.EmailSubject = FillTemplate(oTemplate.Subject)
     End Sub
 
-    Public Sub FillEnvelopeDeletedEmailBody(pEmailData As EmailData)
-        InitDictionary(pEmailData)
+    Public Sub FillEnvelopeDeletedEmailBody(pEmailData As EmailData, pReason As String)
+        InitDictionary(pEmailData, pReason)
         Dim oTemplate = EmailHtmlTemplateModel.GetById(Constants.EmailTemplateType.DocumentDeleted)
 
-        pEmailData.EmailBody = FillTemplate(oTemplate.Body)
+        pEmailData.EmailBody = FillTemplate(oTemplate.Body, pReason)
         pEmailData.EmailSubject = FillTemplate(oTemplate.Subject)
     End Sub
 
@@ -72,11 +73,12 @@ Public Class TemplateService
         pEmailData.EmailSubject = FillTemplate(oTemplate.Subject)
     End Sub
 
-    Private Function FillTemplate(pTemplate As String) As String
+    Private Function FillTemplate(pTemplate As String, Optional pReason As String = "") As String
         Dim oText As String = pTemplate
 
         For Each dictItem As KeyValuePair(Of String, String) In _replaceDictionary
             If oText.Contains(dictItem.Key) Then
+
                 oText = oText.Replace(dictItem.Key, dictItem.Value)
 
             End If
diff --git a/EnvelopeGenerator.Form/Controllers/BaseController.vb b/EnvelopeGenerator.Form/Controllers/BaseController.vb
index 7591b0a1..11cbdf09 100644
--- a/EnvelopeGenerator.Form/Controllers/BaseController.vb
+++ b/EnvelopeGenerator.Form/Controllers/BaseController.vb
@@ -42,7 +42,7 @@ Public MustInherit Class BaseController
         ChartModel = New ChartModel(pState)
     End Sub
 
-    Public Function DeleteEnvelope(pEnvelope As Envelope) As Boolean
+    Public Function DeleteEnvelope(pEnvelope As Envelope, pReason As String) As Boolean
         If pEnvelope Is Nothing Then
             Return True
         End If
@@ -52,7 +52,7 @@ Public MustInherit Class BaseController
                 Return False
             End If
 
-            Return ActionService.DeleteEnvelope(pEnvelope)
+            Return ActionService.DeleteEnvelope(pEnvelope, pReason)
         Else
             Return DeleteEnvelopeFromDisk(pEnvelope)
         End If
diff --git a/EnvelopeGenerator.Form/Controllers/EnvelopeListController.vb b/EnvelopeGenerator.Form/Controllers/EnvelopeListController.vb
index f171ed8f..89f79e38 100644
--- a/EnvelopeGenerator.Form/Controllers/EnvelopeListController.vb
+++ b/EnvelopeGenerator.Form/Controllers/EnvelopeListController.vb
@@ -15,8 +15,8 @@ Public Class EnvelopeListController
         Return EnvelopeModel.ListCompleted()
     End Function
 
-    Public Overloads Function DeleteEnvelope(pEnvelope As Envelope) As Boolean
-        Return MyBase.DeleteEnvelope(pEnvelope)
+    Public Overloads Function DeleteEnvelope(pEnvelope As Envelope, pReason As String) As Boolean
+        Return MyBase.DeleteEnvelope(pEnvelope, pReason)
     End Function
 
     Public Function GetPieChart() As ChartControl
diff --git a/EnvelopeGenerator.Form/EnvelopeGenerator.Form.vbproj b/EnvelopeGenerator.Form/EnvelopeGenerator.Form.vbproj
index 7fb4c94d..6b681a0a 100644
--- a/EnvelopeGenerator.Form/EnvelopeGenerator.Form.vbproj
+++ b/EnvelopeGenerator.Form/EnvelopeGenerator.Form.vbproj
@@ -150,6 +150,12 @@
     <Compile Include="frmMain.vb">
       <SubType>Form</SubType>
     </Compile>
+    <Compile Include="frmRueckruf.Designer.vb">
+      <DependentUpon>frmRueckruf.vb</DependentUpon>
+    </Compile>
+    <Compile Include="frmRueckruf.vb">
+      <SubType>Form</SubType>
+    </Compile>
     <Compile Include="frmSplashScreen.Designer.vb">
       <DependentUpon>frmSplashScreen.vb</DependentUpon>
     </Compile>
@@ -194,6 +200,9 @@
       <DependentUpon>frmMain.vb</DependentUpon>
       <SubType>Designer</SubType>
     </EmbeddedResource>
+    <EmbeddedResource Include="frmRueckruf.resx">
+      <DependentUpon>frmRueckruf.vb</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="frmSplashScreen.resx">
       <DependentUpon>frmSplashScreen.vb</DependentUpon>
     </EmbeddedResource>
diff --git a/EnvelopeGenerator.Form/My Project/Application.Designer.vb b/EnvelopeGenerator.Form/My Project/Application.Designer.vb
index b1785d9e..9f0460d6 100644
--- a/EnvelopeGenerator.Form/My Project/Application.Designer.vb	
+++ b/EnvelopeGenerator.Form/My Project/Application.Designer.vb	
@@ -24,7 +24,7 @@ Namespace My
         <Global.System.Diagnostics.DebuggerStepThroughAttribute()>  _
         Public Sub New()
             MyBase.New(Global.Microsoft.VisualBasic.ApplicationServices.AuthenticationMode.Windows)
-            Me.IsSingleInstance = true
+            Me.IsSingleInstance = false
             Me.EnableVisualStyles = true
             Me.SaveMySettingsOnExit = true
             Me.ShutDownStyle = Global.Microsoft.VisualBasic.ApplicationServices.ShutdownMode.AfterMainFormCloses
diff --git a/EnvelopeGenerator.Form/My Project/Application.myapp b/EnvelopeGenerator.Form/My Project/Application.myapp
index d6d2e5f3..7b34109c 100644
--- a/EnvelopeGenerator.Form/My Project/Application.myapp	
+++ b/EnvelopeGenerator.Form/My Project/Application.myapp	
@@ -2,7 +2,7 @@
 <MyApplicationData xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <MySubMain>true</MySubMain>
   <MainForm>frmSplashScreen</MainForm>
-  <SingleInstance>true</SingleInstance>
+  <SingleInstance>false</SingleInstance>
   <ShutdownMode>0</ShutdownMode>
   <EnableVisualStyles>true</EnableVisualStyles>
   <AuthenticationMode>0</AuthenticationMode>
diff --git a/EnvelopeGenerator.Form/My Project/AssemblyInfo.vb b/EnvelopeGenerator.Form/My Project/AssemblyInfo.vb
index f2e3518b..fc5fe7a3 100644
--- a/EnvelopeGenerator.Form/My Project/AssemblyInfo.vb	
+++ b/EnvelopeGenerator.Form/My Project/AssemblyInfo.vb	
@@ -32,5 +32,5 @@ Imports System.Runtime.InteropServices
 ' You can specify all the values or you can default the Build and Revision Numbers 
 ' by using the '*' as shown below:
 ' [assembly: AssemblyVersion("1.0.*")]
-<Assembly: AssemblyVersion("2.6.0.0")>
+<Assembly: AssemblyVersion("2.7.0.0")>
 <Assembly: AssemblyFileVersion("1.0.0.0")>
diff --git a/EnvelopeGenerator.Form/app.config b/EnvelopeGenerator.Form/app.config
index a5b30491..f3a1fb9f 100644
--- a/EnvelopeGenerator.Form/app.config
+++ b/EnvelopeGenerator.Form/app.config
@@ -14,10 +14,10 @@
         <value>True</value>
       </setting>
       <setting name="DefaultAppSkin" serializeAs="String">
-        <value>Skin/Office 2019 White</value>
+        <value>Skin/The Bezier</value>
       </setting>
       <setting name="DefaultPalette" serializeAs="String">
-        <value></value>
+        <value>VS 2019 Blue</value>
       </setting>
       <setting name="TouchUI" serializeAs="String">
         <value></value>
diff --git a/EnvelopeGenerator.Form/frmMain.Designer.vb b/EnvelopeGenerator.Form/frmMain.Designer.vb
index 036dc241..556e2834 100644
--- a/EnvelopeGenerator.Form/frmMain.Designer.vb
+++ b/EnvelopeGenerator.Form/frmMain.Designer.vb
@@ -58,6 +58,7 @@ Partial Class frmMain
         Me.txtEnvelopeIdLabel = New DevExpress.XtraBars.BarStaticItem()
         Me.btnOpenLogDirectory = New DevExpress.XtraBars.BarButtonItem()
         Me.BarCheckItem1 = New DevExpress.XtraBars.BarCheckItem()
+        Me.bsitmInfo = New DevExpress.XtraBars.BarStaticItem()
         Me.RibbonPage1 = New DevExpress.XtraBars.Ribbon.RibbonPage()
         Me.RibbonPageEnvelopeActions = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.RibbonPageGroup1 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
@@ -82,7 +83,6 @@ Partial Class frmMain
         Me.GridColumn5 = New DevExpress.XtraGrid.Columns.GridColumn()
         Me.GridColumn7 = New DevExpress.XtraGrid.Columns.GridColumn()
         Me.RefreshTimer = New System.Windows.Forms.Timer(Me.components)
-        Me.bsitmInfo = New DevExpress.XtraBars.BarStaticItem()
         CType(Me.SplitContainerControl1, System.ComponentModel.ISupportInitialize).BeginInit()
         CType(Me.SplitContainerControl1.Panel1, System.ComponentModel.ISupportInitialize).BeginInit()
         Me.SplitContainerControl1.Panel1.SuspendLayout()
@@ -390,6 +390,14 @@ Partial Class frmMain
         Me.BarCheckItem1.ImageOptions.LargeImage = CType(resources.GetObject("BarCheckItem1.ImageOptions.LargeImage"), System.Drawing.Image)
         Me.BarCheckItem1.Name = "BarCheckItem1"
         '
+        'bsitmInfo
+        '
+        Me.bsitmInfo.Id = 13
+        Me.bsitmInfo.ImageOptions.Image = CType(resources.GetObject("bsitmInfo.ImageOptions.Image"), System.Drawing.Image)
+        Me.bsitmInfo.Name = "bsitmInfo"
+        Me.bsitmInfo.PaintStyle = DevExpress.XtraBars.BarItemPaintStyle.CaptionGlyph
+        Me.bsitmInfo.Visibility = DevExpress.XtraBars.BarItemVisibility.Never
+        '
         'RibbonPage1
         '
         Me.RibbonPage1.Groups.AddRange(New DevExpress.XtraBars.Ribbon.RibbonPageGroup() {Me.RibbonPageEnvelopeActions, Me.RibbonPageGroup1, Me.RibbonPageGroup2})
@@ -573,14 +581,6 @@ Partial Class frmMain
         '
         Me.RefreshTimer.Interval = 120000
         '
-        'bsitmInfo
-        '
-        Me.bsitmInfo.Id = 13
-        Me.bsitmInfo.ImageOptions.Image = CType(resources.GetObject("BarStaticItem1.ImageOptions.Image"), System.Drawing.Image)
-        Me.bsitmInfo.Name = "bsitmInfo"
-        Me.bsitmInfo.PaintStyle = DevExpress.XtraBars.BarItemPaintStyle.CaptionGlyph
-        Me.bsitmInfo.Visibility = DevExpress.XtraBars.BarItemVisibility.Never
-        '
         'frmMain
         '
         resources.ApplyResources(Me, "$this")
diff --git a/EnvelopeGenerator.Form/frmMain.resx b/EnvelopeGenerator.Form/frmMain.resx
index 4e9b99c0..dc357f7b 100644
--- a/EnvelopeGenerator.Form/frmMain.resx
+++ b/EnvelopeGenerator.Form/frmMain.resx
@@ -123,7 +123,7 @@
   </data>
   <assembly alias="System.Drawing" name="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
   <data name="SplitContainerControl1.Location" type="System.Drawing.Point, System.Drawing">
-    <value>0, 160</value>
+    <value>0, 162</value>
   </data>
   <data name="XtraTabControl1.Dock" type="System.Windows.Forms.DockStyle, System.Windows.Forms">
     <value>Fill</value>
@@ -631,54 +631,54 @@
         2zax9GEAAAAASUVORK5CYII=
 </value>
   </data>
-  <data name="BarStaticItem1.ImageOptions.Image" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+  <data name="bsitmInfo.ImageOptions.Image" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
-        iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8
-        YQUAAAALdEVYdFRpdGxlAEluZm87bRIthgAACltJREFUWEeVVndQ1VcWJm3Tk83ObGbLfzuzO7Ozs7PZ
-        ncwkWROVomAhREUpkiiC9CKwgEqVIoIUKQLSiyAgvRcBQXp78CgK0pvSBQUF0W/PuQ+Imsxk98x87953
-        7/2d7zvnnnt/PzkAL+H/sNd+Br9oP+Hjn8Tsdrl4QoKAhPoS0SZktgnEZ0r42U2S1zfwxs9gc06sjb7e
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+        R5GUK0FYUm3fpahyLXr2LX6e/bzqPyShZpNHTqTmxUkyEfWFkNw/hSfVN+Te6MEkkW4ak64/e46n68+w
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+        R1Yyl8xCr27sxwa5T2ihUlRq4+rE/QfMLSKUDi0gqGgAAYVDCCwZQVDpKGEEAcXDuJg3BK+su3BNvQP3
+        lG7c6prCw0erQvDY5AIux9esOnglq5DvLRE+4eXMJ7OguFvciLQ7X0z5y+WEmtn707KUrzx5iqSqEfjk
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+        1b5Fw/DKG0Dz3TmsrK5jefUpnlARPqb+mcQuuFzvg9O1Ozh7tRs2MZ0wC2vD+WQp5hZWsEyZiEyqhbVz
+        3DHiepvAAW8Z/3nbK6S0b3h8TlRzbfc0HJO7KbI+nM8dxHki9iIhDsldmJxdJlLZCWBr75vGqah2OBD5
+        mas9sI3tgg1lwIIE6Ac0IvvWEGYXlnF3aBoOXln9xPUBgU+GyIKI3tYtUTnyWq1wuLS8CqerneSwB+fS
+        +3Auox9ulGKGHUUaX3wHD2l7uvpnkFxyG7o+NyniDtgnUOrjumDN5Fc6YBLaKgQY+tVh7N4SFhYfIzim
+        HPqWAarE+asXBbx19kK6f3XjXRF9K0cU3Y7TyT1wpKJyTOuFE+2tE7VnaMz8Sit0LlRCw7UMWm7lsApv
+        gmWEBFYxXZQJKcwjOmAa2gbD4Bbo+TfgqOctZFcP4t70Q5RVdcP8TEwQcb5LENvAP+84emfVDI7MiKqN
+        KOiFZZQEtvFdsE/shj0VlT0Rn6bWJr4TJpcbEZQuRX3XJBZXnoqt0CUi88h2mIZLYHy5FYZBMvLjvvXQ
+        9qiGR1wbxu8too2K0dIhgYvxQwIXoxDw7lmvzNnFpceYmVuGU6yEopBQFqSwpiNlzWnllvbWMKQJkr4Z
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+        rdOFM0ZnVsOlAkaXW2B2RQIzSidHZhHZATNq9QMbkVZxFwtE/IDALZumWyVOBjVDL6AJun4NOOZTT9tU
+        C01Kv7pLJfZYFaJ/eBb9I7MwOxO/RpyfEPhOEAI+sHFNEQKG6BR8Z1eCAw4VMCCHRlRIRhSZAFW1QUgL
+        DrncwCRlap5uuwW6etnUXcplxBcboONdRxmpgZYHk9/EXqti7D1VgN7BGdwemIKxXQwL+M1LAiwdk2Yf
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+        abpUphefYIZazoS5dwUUTXLFPBPvMsuDIkWuaJQDZfMc1EtGxevZ/tw17FY7pUGc/E5gbtlFRPhY1yxs
+        QNozBv4G8E1ogYJxLmUiTziUoQDyxtmobh/H1IPHArMPn2CZ3pgzdN/vMMzCLopYyTRHiJE3ysYOg0x4
+        xzTR+R9Hbkk7NPT8hojrt4Stm5CNlbz33VHnk64+GeK4tHSO46hjMYnIgRI544h2meVCgZyGprVj/P6P
+        X0hDEw8QQineSWSKJtmEHMiTGP6vdaZQRN8iHYe1YzxFb21CXJvp3xKwmYVPtAwCmosrpGglxRUNg1C1
+        ysNOcqZAkSuSGAUi2GGYia/1rmPbiTRs003F1/ppIlJ54yyx37x++8kM7LPIQWntABrpOzIq6SYO6pxv
+        J45PCfw23CKX0zbkq1lWjF/Jf//VcbOQ+Rp6LzRLx8hBP7TPFmHHSSIwIAJyziQKAtkCPMaiWMQOIt6u
+        nw7t04Uoqu5Dg2QE2UUSaOn5L3z2xYHtxMFvwpeil9PUv8QND/Cx+FB+n6m6nmXYWgGdCv7SrWkehmdE
+        HXaZZArn2w0yiIxAZAI09o1+Br6hrCgaZcD9Sh2qmgZR1zaMtNxm6BhcWvtKQZe/kvnoiS8itaNe1GzY
+        kRP+L34TioLcrmx4RFM/4EFiei05GkFd6zBu1A3gYmwj9FxLcNg2H1+foPTrpom+nksJfGIaUFrTj5qW
+        YdS2DCEsvgKHfriw+OXOY9rkky8eUXjM9a2WB3U37NCxiy8K2BTx0d8/3/+F2lGPdlvnRKTnt5DjIeGY
+        UdNM2GhvNQ8SuJX1U3OaYWYXhX2HXTr++o9d/yZffO9vVr0QsF/DnbobdkDHWwh4RQRvx/uET3eqmJqq
+        anmO6luEwiswB8lZjcgoaEM1pZmRTv2kzAacD8jGcZNg7D9ybnSbooEFPft7Ale8SDtjk2fPYVf6u2Fq
+        2l5bAl4RwcXCFfsR4Xefb9NSVVK1Cd1LkRF6v9XyxLeaHtij7ty3R92pQ2GfVdg/v1T/jtb+gcD7/Q6B
+        A3mJnKFyyJmGNmy/hqecqqbHT0D2qhCuYE4nHyWO7o8b4D6P8T7zGl67RbznkIucwEFnQaxy0ElO+YAT
+        Tf3vtimEjyo75pQyyYvgMZ7jNQxe/wsmJ/df0Zh/vpjXMzsAAAAASUVORK5CYII=
 </value>
   </data>
   <data name="RibbonControl.Location" type="System.Drawing.Point, System.Drawing">
@@ -703,13 +703,13 @@
     <value>Einstellungen</value>
   </data>
   <data name="RibbonControl.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1088, 160</value>
+    <value>1090, 162</value>
   </data>
   <data name="RibbonStatusBar.Location" type="System.Drawing.Point, System.Drawing">
-    <value>0, 659</value>
+    <value>0, 660</value>
   </data>
   <data name="RibbonStatusBar.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1088, 22</value>
+    <value>1090, 22</value>
   </data>
   <data name="&gt;&gt;RibbonStatusBar.Name" xml:space="preserve">
     <value>RibbonStatusBar</value>
@@ -736,7 +736,7 @@
     <value>2</value>
   </data>
   <data name="GridEnvelopes.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1086, 466</value>
+    <value>1088, 459</value>
   </data>
   <data name="GridEnvelopes.TabIndex" type="System.Int32, mscorlib">
     <value>2</value>
@@ -754,7 +754,7 @@
     <value>0</value>
   </data>
   <data name="XtraTabPage1.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1086, 466</value>
+    <value>1088, 459</value>
   </data>
   <data name="XtraTabPage1.Text" xml:space="preserve">
     <value>Offene Umschläge</value>
@@ -772,7 +772,7 @@
     <value>0</value>
   </data>
   <data name="XtraTabControl1.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1088, 489</value>
+    <value>1090, 488</value>
   </data>
   <data name="XtraTabControl1.TabIndex" type="System.Int32, mscorlib">
     <value>3</value>
@@ -994,7 +994,7 @@
     <value>1</value>
   </data>
   <data name="SplitContainerControl1.Size" type="System.Drawing.Size, System.Drawing">
-    <value>1088, 499</value>
+    <value>1090, 498</value>
   </data>
   <data name="SplitContainerControl1.TabIndex" type="System.Int32, mscorlib">
     <value>5</value>
@@ -1012,7 +1012,7 @@
     <value>0</value>
   </data>
   <metadata name="RefreshTimer.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>196, 17</value>
+    <value>193, 17</value>
   </metadata>
   <metadata name="$this.Localizable" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
@@ -1021,7 +1021,7 @@
     <value>6, 13</value>
   </data>
   <data name="$this.ClientSize" type="System.Drawing.Size, System.Drawing">
-    <value>1088, 681</value>
+    <value>1090, 682</value>
   </data>
   <data name="frmMain.IconOptions.Image" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
@@ -1277,6 +1277,12 @@
   <data name="&gt;&gt;BarCheckItem1.Type" xml:space="preserve">
     <value>DevExpress.XtraBars.BarCheckItem, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a</value>
   </data>
+  <data name="&gt;&gt;bsitmInfo.Name" xml:space="preserve">
+    <value>bsitmInfo</value>
+  </data>
+  <data name="&gt;&gt;bsitmInfo.Type" xml:space="preserve">
+    <value>DevExpress.XtraBars.BarStaticItem, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a</value>
+  </data>
   <data name="&gt;&gt;RibbonPage1.Name" xml:space="preserve">
     <value>RibbonPage1</value>
   </data>
@@ -1403,12 +1409,6 @@
   <data name="&gt;&gt;RefreshTimer.Type" xml:space="preserve">
     <value>System.Windows.Forms.Timer, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>
-  <data name="&gt;&gt;bsitmInfo.Name" xml:space="preserve">
-    <value>bsitmInfo</value>
-  </data>
-  <data name="&gt;&gt;bsitmInfo.Type" xml:space="preserve">
-    <value>DevExpress.XtraBars.BarStaticItem, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a</value>
-  </data>
   <data name="&gt;&gt;$this.Name" xml:space="preserve">
     <value>frmMain</value>
   </data>
diff --git a/EnvelopeGenerator.Form/frmMain.vb b/EnvelopeGenerator.Form/frmMain.vb
index 902b88cc..c18051a3 100644
--- a/EnvelopeGenerator.Form/frmMain.vb
+++ b/EnvelopeGenerator.Form/frmMain.vb
@@ -1,4 +1,5 @@
-Imports DevExpress.Utils.Extensions
+Imports DevExpress.LookAndFeel
+Imports DevExpress.Utils.Extensions
 Imports DevExpress.XtraCharts
 Imports DevExpress.XtraGrid
 Imports DevExpress.XtraGrid.Views.Grid
@@ -38,6 +39,12 @@ Public Class frmMain
         RefreshHelper = New RefreshHelper(ViewEnvelopes, "Id")
 
         Controller = New EnvelopeListController(State)
+        Try
+            Me.LookAndFeel.UseDefaultLookAndFeel = False
+            LookAndFeel.SetSkinStyle(SkinStyle.Office2019Colorful, SkinSvgPalette.DefaultSkin)
+        Catch ex As Exception
+
+        End Try
 
         LoadEnvelopeData()
     End Sub
@@ -130,14 +137,14 @@ Public Class frmMain
         End Try
     End Sub
 
-    Private Sub DeleteEnvelope(pRowHandle As Integer)
+    Private Sub DeleteEnvelope(pRowHandle As Integer, pReason As String)
         Dim oEnvelope As Envelope = ViewEnvelopes.GetRow(pRowHandle)
 
-        If MsgBox(Resources.Envelope.Do_you_really_want_to_delete_this_envelope, MsgBoxStyle.Question Or MsgBoxStyle.YesNo, Text) = MsgBoxResult.No Then
-            Exit Sub
-        End If
+        'If MsgBox(Resources.Envelope.Do_you_really_want_to_delete_this_envelope, MsgBoxStyle.Question Or MsgBoxStyle.YesNo, Text) = MsgBoxResult.No Then
+        '    Exit Sub
+        'End If
 
-        If Controller.DeleteEnvelope(oEnvelope) Then
+        If Controller.DeleteEnvelope(oEnvelope, pReason) Then
             LoadEnvelopeData()
         Else
             MsgBox(Resources.Envelope.The_envelope_could_not_be_deleted, MsgBoxStyle.Critical, Text)
@@ -152,10 +159,20 @@ Public Class frmMain
     End Sub
 
     Private Sub btnDeleteEnvelope_ItemClick_1(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnDeleteEnvelope.ItemClick
-        Dim oSelectedRows = ViewEnvelopes.GetSelectedRows()
-        If oSelectedRows.Count > 0 Then
-            DeleteEnvelope(oSelectedRows.First)
-        End If
+        Try
+            Dim oSelectedRows = ViewEnvelopes.GetSelectedRows()
+            If oSelectedRows.Count > 0 Then
+                Dim ofrmAbort As New frmRueckruf
+                frmRueckruf.ShowDialog()
+                If frmRueckruf.Continue_Reject = True Then
+                    DeleteEnvelope(oSelectedRows.First, frmRueckruf.Reject_reason)
+                End If
+
+            End If
+        Catch ex As Exception
+            MsgBox(ex.Message, MsgBoxStyle.Critical)
+        End Try
+
     End Sub
 
     Private Sub frmMain_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
diff --git a/EnvelopeGenerator.Form/frmRueckruf.Designer.vb b/EnvelopeGenerator.Form/frmRueckruf.Designer.vb
new file mode 100644
index 00000000..c0cfdea9
--- /dev/null
+++ b/EnvelopeGenerator.Form/frmRueckruf.Designer.vb
@@ -0,0 +1,129 @@
+<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
+Partial Class frmRueckruf
+    Inherits System.Windows.Forms.Form
+
+    'Das Formular überschreibt den Löschvorgang, um die Komponentenliste zu bereinigen.
+    <System.Diagnostics.DebuggerNonUserCode()> _
+    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
+        Try
+            If disposing AndAlso components IsNot Nothing Then
+                components.Dispose()
+            End If
+        Finally
+            MyBase.Dispose(disposing)
+        End Try
+    End Sub
+
+    'Wird vom Windows Form-Designer benötigt.
+    Private components As System.ComponentModel.IContainer
+
+    'Hinweis: Die folgende Prozedur ist für den Windows Form-Designer erforderlich.
+    'Das Bearbeiten ist mit dem Windows Form-Designer möglich.  
+    'Das Bearbeiten mit dem Code-Editor ist nicht möglich.
+    <System.Diagnostics.DebuggerStepThrough()> _
+    Private Sub InitializeComponent()
+        Me.Label2 = New System.Windows.Forms.Label()
+        Me.txtReason = New System.Windows.Forms.TextBox()
+        Me.btnWeiter = New System.Windows.Forms.Button()
+        Me.Label1 = New System.Windows.Forms.Label()
+        Me.btnCancel = New System.Windows.Forms.Button()
+        Me.StatusStrip1 = New System.Windows.Forms.StatusStrip()
+        Me.tsstatus = New System.Windows.Forms.ToolStripStatusLabel()
+        Me.StatusStrip1.SuspendLayout()
+        Me.SuspendLayout()
+        '
+        'Label2
+        '
+        Me.Label2.AutoSize = True
+        Me.Label2.Location = New System.Drawing.Point(22, 20)
+        Me.Label2.Margin = New System.Windows.Forms.Padding(4, 0, 4, 0)
+        Me.Label2.Name = "Label2"
+        Me.Label2.Size = New System.Drawing.Size(432, 16)
+        Me.Label2.TabIndex = 0
+        Me.Label2.Text = "Bitte geben Sie einen Grund für den Abbruch/Rückruf des Umschlages ein:"
+        '
+        'txtReason
+        '
+        Me.txtReason.AcceptsReturn = True
+        Me.txtReason.Location = New System.Drawing.Point(25, 40)
+        Me.txtReason.Margin = New System.Windows.Forms.Padding(4)
+        Me.txtReason.Multiline = True
+        Me.txtReason.Name = "txtReason"
+        Me.txtReason.Size = New System.Drawing.Size(429, 87)
+        Me.txtReason.TabIndex = 1
+        '
+        'btnWeiter
+        '
+        Me.btnWeiter.Location = New System.Drawing.Point(25, 134)
+        Me.btnWeiter.Name = "btnWeiter"
+        Me.btnWeiter.Size = New System.Drawing.Size(203, 44)
+        Me.btnWeiter.TabIndex = 2
+        Me.btnWeiter.Text = "Weiter"
+        Me.btnWeiter.UseVisualStyleBackColor = True
+        '
+        'Label1
+        '
+        Me.Label1.AutoSize = True
+        Me.Label1.Location = New System.Drawing.Point(28, 87)
+        Me.Label1.Margin = New System.Windows.Forms.Padding(4, 0, 4, 0)
+        Me.Label1.Name = "Label1"
+        Me.Label1.Size = New System.Drawing.Size(0, 16)
+        Me.Label1.TabIndex = 3
+        '
+        'btnCancel
+        '
+        Me.btnCancel.Location = New System.Drawing.Point(251, 134)
+        Me.btnCancel.Name = "btnCancel"
+        Me.btnCancel.Size = New System.Drawing.Size(203, 44)
+        Me.btnCancel.TabIndex = 4
+        Me.btnCancel.Text = "Abbruch"
+        Me.btnCancel.UseVisualStyleBackColor = True
+        '
+        'StatusStrip1
+        '
+        Me.StatusStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.tsstatus})
+        Me.StatusStrip1.Location = New System.Drawing.Point(0, 185)
+        Me.StatusStrip1.Name = "StatusStrip1"
+        Me.StatusStrip1.Size = New System.Drawing.Size(488, 22)
+        Me.StatusStrip1.TabIndex = 5
+        Me.StatusStrip1.Text = "StatusStrip1"
+        '
+        'tsstatus
+        '
+        Me.tsstatus.Name = "tsstatus"
+        Me.tsstatus.Size = New System.Drawing.Size(0, 17)
+        '
+        'frmRueckruf
+        '
+        Me.AutoScaleDimensions = New System.Drawing.SizeF(7.0!, 16.0!)
+        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
+        Me.ClientSize = New System.Drawing.Size(488, 207)
+        Me.Controls.Add(Me.StatusStrip1)
+        Me.Controls.Add(Me.btnCancel)
+        Me.Controls.Add(Me.Label1)
+        Me.Controls.Add(Me.btnWeiter)
+        Me.Controls.Add(Me.txtReason)
+        Me.Controls.Add(Me.Label2)
+        Me.Font = New System.Drawing.Font("Tahoma", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
+        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog
+        Me.Margin = New System.Windows.Forms.Padding(4)
+        Me.MaximizeBox = False
+        Me.MinimizeBox = False
+        Me.Name = "frmRueckruf"
+        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent
+        Me.Text = "Abbruch - Bestätigung"
+        Me.StatusStrip1.ResumeLayout(False)
+        Me.StatusStrip1.PerformLayout()
+        Me.ResumeLayout(False)
+        Me.PerformLayout()
+
+    End Sub
+
+    Friend WithEvents Label2 As Label
+    Friend WithEvents txtReason As TextBox
+    Friend WithEvents btnWeiter As Button
+    Friend WithEvents Label1 As Label
+    Friend WithEvents btnCancel As Button
+    Friend WithEvents StatusStrip1 As StatusStrip
+    Friend WithEvents tsstatus As ToolStripStatusLabel
+End Class
diff --git a/EnvelopeGenerator.Form/frmRueckruf.resx b/EnvelopeGenerator.Form/frmRueckruf.resx
new file mode 100644
index 00000000..74443647
--- /dev/null
+++ b/EnvelopeGenerator.Form/frmRueckruf.resx
@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="StatusStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>
\ No newline at end of file
diff --git a/EnvelopeGenerator.Form/frmRueckruf.vb b/EnvelopeGenerator.Form/frmRueckruf.vb
new file mode 100644
index 00000000..76317af6
--- /dev/null
+++ b/EnvelopeGenerator.Form/frmRueckruf.vb
@@ -0,0 +1,50 @@
+Imports EnvelopeGenerator.Common.My
+
+Public Class frmRueckruf
+
+    Public Continue_Reject As Boolean = False
+    Public Reject_reason As String = ""
+    Public Sub New()
+
+        ' Dieser Aufruf ist für den Designer erforderlich.
+        InitializeComponent()
+
+        ' Fügen Sie Initialisierungen nach dem InitializeComponent()-Aufruf hinzu.
+
+    End Sub
+    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles btnWeiter.Click
+        If txtReason.Text <> "" Then
+            If MsgBox(Resources.Envelope.Do_you_really_want_to_delete_this_envelope, MsgBoxStyle.Question Or MsgBoxStyle.YesNo, Text) = MsgBoxResult.No Then
+                Me.Close()
+            End If
+            tsstatus.Text = ""
+            Continue_Reject = True
+            Dim oReason = txtReason.Text
+            'If oReason.Contains(vbCrLf) Then
+            '    MsgBox("vbCrLf")
+            'ElseIf oReason.Contains(Chr(13)) Then
+            '    MsgBox("chr13")
+            'ElseIf oReason.Contains(Chr(10)) Then
+            '    MsgBox("chr10")
+            'End If
+
+            'oReason = oReason.Replace(vbLf, "<br>")
+            oReason = oReason.Replace(vbCrLf, "<br>")
+            oReason = oReason.Replace(Chr(13), "<br>")
+            oReason = oReason.Replace(Chr(10), "<br>")
+            Reject_reason = oReason
+            Me.Close()
+        Else
+            tsstatus.Text = "Please add a reason for aborting - " & Now
+        End If
+    End Sub
+
+    Private Sub btnCancel_Click(sender As Object, e As EventArgs) Handles btnCancel.Click
+        Me.Close()
+    End Sub
+
+    Private Sub frmRueckruf_Load(sender As Object, e As EventArgs) Handles Me.Load
+        txtReason.Text = ""
+        tsstatus.Text = ""
+    End Sub
+End Class
\ No newline at end of file