Minimize Outlook

I have vba code that opens Outlook so I can run code to send emails...

Application.ActivateMicrosoftApp (xlMicrosoftMail)

But I don't want it to be visible, I want it to be minimized.
If I try:

Set olApp = CreateObject("Outlook.Application")
olApp.WindowState = xlMinimized

I get an error "Object doesn't support this property or method" referring to:

olApp.WindowState = xlMinimized

I've tried:

Set olApp = CreateObject("Outlook.Application")

followed later with code to send emails,

Set objol = New Outlook.Application
Set objmail = objol.createitem(olmailitem)
With objmail
.To = EMTo
.cc = EMCC
.Subject = EMSubject
.Body = EMBody
.NoAging = True
.Attachments.Add EMFile
.Send
End With

But I get an error "You don't have appropriate permission to perform this operation" referring to:

Set objmail = objol.createitem(olmailitem)

Because of the way our network is designed, the only code that works to send emails is:

Application.ActivateMicrosoftApp (xlMicrosoftMail)
Set objol = New Outlook.Application
Set objmail = objol.createitem(olmailitem)
With objmail
.To = EMTo
.cc = EMCC
.Subject = EMSubject
.Body = EMBody
.NoAging = True
.Attachments.Add EMFile
.Send
End With

but Outlook remains open the whole time the emails are being sent until it's closed by code later on.

Is there a way to minimize outlook AND use the code above?