Outlook web add-in on send sample file

OutlookOnSendManifest.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--Created:cb85b80c-f585-40ff-8bfc-34234234-->
<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>a34f1716-6000-4d87-8dd6-7d57fd883a17</Id>
	<!--Version. Updates from the store only get triggered if there is a version change. -->
	<Version>1.0.0.0</Version>
	<ProviderName>Zameel Amjed</ProviderName>
	<DefaultLocale>en-US</DefaultLocale>
	<!-- The display name of your add-in. Used on the store and various places of the Office UI such as the add-ins dialog. -->
	<DisplayName DefaultValue="Test Plugin" />
	<Description DefaultValue="Test Outlook Web Plugin On Send"/>
	<IconUrl DefaultValue="http://your-root-url/assets/images/logo.png"/>
	<Requirements>
		<Sets DefaultMinVersion="1.1">
			<Set Name="Mailbox" />
		</Sets>
	</Requirements>

	<FormSettings>
		<Form xsi:type="ItemEdit">
			<DesktopSettings>
				<SourceLocation DefaultValue="https://your-root-url/FunctionFile.html" />
			</DesktopSettings>
		</Form>
	</FormSettings>

	<Permissions>ReadWriteMailbox</Permissions>

	<Rule xsi:type="RuleCollection" Mode="Or">
		<Rule xsi:type="ItemIs" ItemType="Message" FormType="Edit" />
	</Rule>

	<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">
			<Requirements>
				<bt:Sets DefaultMinVersion="1.3">
					<bt:Set Name="Mailbox" />
				</bt:Sets>
			</Requirements>
			<Hosts>
				<Host xsi:type="MailHost">
					<DesktopFormFactor>
						<!-- Location of the Functions that UI-less buttons can trigger (ExecuteFunction Actions). -->
						<FunctionFile resid="functionFile" />
						<ExtensionPoint xsi:type="Events">
							<Event Type="ItemSend" FunctionExecution="synchronous" FunctionName="cleanOnSend" />
						</ExtensionPoint>
					</DesktopFormFactor>
				</Host>
			</Hosts>
			<Resources>
				<bt:Urls>
					<bt:Url id="functionFile" DefaultValue="https://your-root-url/FunctionFile.html"/>
				</bt:Urls>
			</Resources>
		</VersionOverrides>
	</VersionOverrides>
</OfficeApp>