manifest-localhost.xml

<?xml version="1.0" encoding="UTF-8"?>
<OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0"
  xmlns:mailappor="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="MailApp">
  <Id>{C341AD31-BF7A-4C1D-99F1-D2E5896BEB0A}</Id>
  <Version>1.0</Version>
  <ProviderName>Contoso</ProviderName>
  <DefaultLocale>en-us</DefaultLocale>
  <DisplayName DefaultValue="Office Add-ins signature sample"/>
  <Description DefaultValue="Insert your signature with ease."/>
  <IconUrl DefaultValue="https://localhost:3000/assets/final_logo.png"/>
  <HighResolutionIconUrl DefaultValue="https://localhost:3000/assets/final_logo.jpg"/>
  <SupportUrl DefaultValue="https://www.contoso.com/help"/>
  <AppDomains>
    <AppDomain>https://www.contoso.com</AppDomain>
  </AppDomains>
  <Hosts>
    <Host Name="Mailbox"/>
  </Hosts>
  <Requirements>
    <Sets DefaultMinVersion="1.1">
      <Set Name="Mailbox" />
    </Sets>
  </Requirements>

  <!-- Old schema. This will be overridden by the VersionOverrides below. -->
  <FormSettings>
    <Form xsi:type="ItemRead">
      <DesktopSettings>
        <SourceLocation DefaultValue="https://localhost:3000/editsignature.html"/>
        <RequestedHeight>250</RequestedHeight>
      </DesktopSettings>
    </Form>
  </FormSettings>
  <Permissions>ReadWriteMailbox</Permissions>
  <Rule xsi:type="RuleCollection" Mode="Or">
    <Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" />
  </Rule>
  <DisableEntityHighlighting>true</DisableEntityHighlighting>
  <!-- /Old schema. -->

  <VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
    <VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
      <Description resid="residAppDesc" />

      <Requirements>
        <bt:Sets DefaultMinVersion="1.10">
          <bt:Set Name="Mailbox" />
        </bt:Sets>
      </Requirements>

      <Hosts>
        <Host xsi:type="MailHost">
          <!-- Specify the runtime for event-based activation. -->
          <!-- For more information, see https://learn.microsoft.com/office/dev/add-ins/outlook/autolaunch -->
          <Runtimes>
            <Runtime resid="Autorun">
              <Override type="javascript" resid="runtimeJs"/>
            </Runtime>
          </Runtimes>

          <DesktopFormFactor>
            <ExtensionPoint xsi:type="MessageComposeCommandSurface">
              <OfficeTab id="TabDefault">
                <Group id="mccsG0">
                  <Label resid="residGL0"/>
                  <Control xsi:type="Button" id="MRCS_TpBtn0">
                    <Label resid="residStr0"/>
                    <Supertip>
                      <Title resid="residStr0" />
                      <Description resid="residTT0" />
                    </Supertip>
                    <Icon>
                      <bt:Image size="16" resid="Icon16x16" />
                      <bt:Image size="32" resid="Icon16x16" />
                      <bt:Image size="80" resid="Icon16x16" />
                    </Icon>
                    <Action xsi:type="ShowTaskpane">
                      <SourceLocation resid="residUrl0"/>
                    </Action>
                  </Control>
                </Group>
              </OfficeTab>
            </ExtensionPoint>

            <ExtensionPoint xsi:type="AppointmentOrganizerCommandSurface">
              <OfficeTab id="TabDefault">
                <Group id="aocsG0">
                  <Label resid="residGL0"/>
                  <Control xsi:type="Button" id="MRCS_TpBtn1">
                    <Label resid="residStr0"/>
                    <Supertip>
                      <Title resid="residStr0"/>
                      <Description resid="residTT0"/>
                    </Supertip>
                    <Icon>
                      <bt:Image size="16" resid="Icon16x16" />
                      <bt:Image size="32" resid="Icon16x16" />
                      <bt:Image size="80" resid="Icon16x16" />
                    </Icon>
                    <Action xsi:type="ShowTaskpane">
                      <SourceLocation resid="residUrl0"/>
                    </Action>
                  </Control>
                </Group>
              </OfficeTab>
            </ExtensionPoint>

            <!-- Specify function to call for new message and new appointment events -->
            <ExtensionPoint xsi:type="LaunchEvent">
              <LaunchEvents>
                <LaunchEvent Type="OnNewMessageCompose" FunctionName="checkSignature" />
                <LaunchEvent Type="OnNewAppointmentOrganizer" FunctionName="checkSignature" />
              </LaunchEvents>
              <SourceLocation resid="Autorun" />
            </ExtensionPoint>

          </DesktopFormFactor>
        </Host>
      </Hosts>
      <Resources>
        <bt:Images>
          <bt:Image id="Icon16x16" DefaultValue="https://localhost:3000/assets/final_logo.png"></bt:Image>
        </bt:Images>
        <bt:Urls>
          <bt:Url id="residUrl0" DefaultValue="https://localhost:3000/editsignature.html"></bt:Url>
          <bt:Url id="Autorun" DefaultValue="https://localhost:3000/autorunweb.html"></bt:Url>
          <bt:Url id="runtimeJs" DefaultValue="https://localhost:3000/autorunshared.js"></bt:Url>
        </bt:Urls>
        <bt:ShortStrings>
          <bt:String id="residGL0" DefaultValue="Signature Injector"></bt:String>
          <bt:String id="residStr0" DefaultValue="Set my signature"></bt:String>
        </bt:ShortStrings>
        <bt:LongStrings>
          <bt:String id="residAppDesc" DefaultValue="Insert your signature with ease."></bt:String>
          <bt:String id="residTT0" DefaultValue="Opens a pane displaying all available properties."></bt:String>
        </bt:LongStrings>
      </Resources>
    </VersionOverrides>
  </VersionOverrides>
</OfficeApp>