IIS7 - email alert when an Application Pool stops?

Solution 1:

Turn on health monitoring, pointing to an email provider:

<system.net>
    <mailSettings>
        <smtp deliveryMethod="Network" from="[email protected]">
            <network defaultCredentials="false" 
                     host="example.com"
                     password="mypassword"
                     userName="emailauthenticationusername" />
        </smtp>
    </mailSettings>
</system.net>

<healthMonitoring>
    <providers>
            <add name="MailWebEventProvider"
                 type="System.Web.Management.SimpleMailWebEventProvider"
                 buffer="false" />
      </providers>
      <rules>
        <add name="Application Lifetime Events Default"
             eventName="Application Lifetime Events"
             provider="MailWebEventProvider"
             profile="Default"
             minInstances="1"
             maxLimit="Infinite"
             minInterval="00:01:00"
             custom="" />
      </rules>
</healthMonitoring>