To test a hunch, I created a second personal inbound email account to a separate mailbox on the same mail server. I CAN switch between the parent INBOX folders of each account with ease. I still cannot switch into the child folders (INBOX.sent, etc) of any of the mail accounts.
I now wonder if this means that there is a mailbox selector hard coded in source code to “INBOX” instead of using a user submitted variable. I ran a grep search in the application root recursively on the term “INBOX” and went file by file. I changed the occurrence of “INBOX” to “INBOX.sent” and refreshed the UI numerous times, also trying to select different folders. For each occurrence I saw no change and wrote the code value back to “INBOX”, basically leaving each file as I had found it.
Anybody else having thoughts on the cause? Anybody having similar problems?