Email sending twice

I have an asp.net page that sends an email to a client using much of the rendered page content.  For some reason, it is sending 2 emails every time and I can't figure out why.  I have similar code on another page and it works great.  Can anyone see in my sub below what could be causing this?
Protected Sub BtnEmailPlanner_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BtnEmailPlanner.Click If txtEmailFrom.Text = "" Then txtMsg.Text = "There is no FROM (Organization) email address. Email cancelled." Exit Sub End If If txtEmailTo.Text = "" Then txtMsg.Text = "There is no TO Email address. Email cancelled." Exit Sub End If PanelNewMenu.Visible = False Dim strOldCaption As String = LblCaption.Text LblCaption.Visible = False Dim toAddres ...