embedded html powershell email compressing pic length

Question

I have a powershell script that embedds (not attaches) a picture and sends an email. The picture has increased now to 1500x5000 pixels and now I'm seeing that the pictures lenth gets compressed and it distorts the picture. How ever, when I manually insert the picture via outlook and send an email, it looks fine.

If i save the picture and then open it via paint or something, the picture opens fine. It just looks compressed in the email. Anyone know what may be going on there?

{
    $Application = "C:AutobatchSpotfire.Dxp.Automation.ClientJobSender.exe"
    $Arguments  = "http://s.net:8070/spotfireautomation/JobExecutor.asmx C:AutobatchHourlyStats.xml"
    $CommandLine = "{0} {1}" -f $Application,$Arguments
    invoke-expression $CommandLine
    $file = "C:AutobatchHourlyStats.png"
    $smtpServer = "smtp.staom.sec.s.net"
    $att = new-object Net.Mail.Attachment($file)
    $att.ContentType.MediaType = “image/png”
    $att.ContentId = “pict”
    $att.TransferEncoding = [System.Net.Mime.TransferEncoding]::Base64
    $msg = new-object Net.Mail.MailMessage
    $smtp = new-object Net.Mail.SmtpClient($smtpServer)
    $msg.Attachments.Add($att)
    $msg.From = "[email protected]"
    $msg.To.Add("[email protected]")
    $msg.Subject = "Voice and Data Hourly Stats"
    $msg.Body = "<p style=’font-family: Calibri, sans-serif’>
              Voice and data hourly stats details<br />
             </p>
             <img src='cid:pict'/>"
    $msg.IsBodyHTML = $true
    $smtp.Send($msg)
    $att.Dispose()
    invoke-expression "DEL $file"
}

here is what the picture looks like in the email.

Answer 1

Try adding

$att.ContentDisposition.Inline = $true

I suspect some default behavior is happening under the covers and it's just not consistent between the script and Outlook.

More info here