I've got the following skeleton in my HttpApplication (global.aspx) file:

       Public Sub New()
           MyBase.New()
           ApplicationTimer = New System.Timers.Timer
           ApplicationTimer.BeginInit()
           ApplicationTimer.Interval = 60 * 1000        ' 60 seconds
           ApplicationTimer.Enabled = True
           ApplicationTimer.EndInit()
       End Sub

       Private Sub ApplicationTimer_Elapsed(ByVal sender As Object, ByVal e
As System.Timers.ElapsedEventArgs) Handles ApplicationTimer.Elapsed
           ' Do something time consuming
       End Sub

Is ApplicationTimer_Elapsed run on a separate thread to those processing
HTTP requests? The reason I ask is that the code I'm about to drop into
ApplicationTimer_Elapsed takes several seconds to run. It's sending an email
via SmtpClient.Send(MailMessage) which doesn't seem to return until the
email has been sent.

I don't want this operation to slow up supplying pages to users of the
system requesting web pages.

Thanks, Rob.