I've got a process that needs to pick up mail messages from a certain account, and we have messages from one vendor that seem to have trouble--something in their message formatting. Our workaround has been to open Outlook 2010, and move the message(s) from the inbox to Sent Items, and back again. The external process then seems to be able to pick up the message(s). I've got a filter in place that moves the messages to the Sent items folder, and have a Powershell script leveraging EWS to move them back to the inbox. Even though the messages are getting moved correctly, our external process can't seem to get at the messages. Would there be any significant differences between how the outlook client and EWS are acting on these messages? Really confused by this one, the logs don't shed any light...
TIA