I have a macro set up that will automatically send out emails to dozens of managers. Sometimes they\'re away and I have to check the away message and manually forward it to
The answer to the similar question you found (Remove recipients from Outlook email if automatic reply is activated) still stands. What were you having problem with?
The only additional possibility (and this is what Outlook uses when it displays an OOF banner for a recipient you are about to send to) is to use EWS and the GetMailTips operation (see https://msdn.microsoft.com/en-us/library/office/dd877060(v=exchg.150).aspx).