I'm trying to write a poweshell script that sends an outbound email. I've gotten the script to work perfectly the problem is we have a third part application that embedds a logo in all outgoing messages in the message. Sending a message through Outlook works flawlesssly but for whatever reason when using the script for whatever reason the message isn't being sent as an HTML message so the logo is sen as an attachment to a gmail address for example. I essentialy trying to send a test message from every user in our environment to test outgoing signatures that are applied by this same 3rd part application..
Send-MailMessage -From $From -to $To -Subject $Subject -Body $Body -BodyAsHtml -SmtpServer $SMTPServer -port $SMTPPort -Priority High