I got a legacy 3rd party application that uses Outlook to send out Email - the new emails appear in the Outlook Outbox and gets delivered when Outlook sends email (either automatically by settings or manually using the send mail button). I do not know what API it uses, but I suspect it could be either MAPI extended or Outlook Object Model, etc - but it is not using MAPI simple as there is no need to "allow" the outgoing email. However, the weird thing is that it will only work if Outlook...
3rd party application must require Outlook to be running in order to send out Email
3rd party application must require Outlook to be running in order to send out Email