Local Folders are for messages that are only stored on the local computer, whereas the IMAP Inbox is a folder that syncs with the IMAP mail server. To copy the Inbox to Local Folders automatically, create a filter that copies all messages to a subfolder of Local Folders.

Thanks, but that doesn't speak to my request. I don't want messages and folders existing in two places. TBird allows me to redirect Archives, Sent, and Drafts, and other clients allow the IMAP Inbox and Deleted to combine within a single local folder (or at least appear to). Thus my request for an enhancement.

Local Folders and IMAP folders are two different types of storage. Add the account as POP if you want all mail stored locally.

Thanks again. There is no POP option (poption?) in iCloud. I don't know the technical limitations, but I do know that other clients can combine POP and IMAP into a single Inbox, and I do know that TBird can already combine some folders (Sent, Drafts, Archives) into the Local Folder. So I'm asking the TBird programmers to look at this as a feature request. Are you one of the TBird programmers? Are you saying that due to TBird's structure this is impossible? I know it's not completely impossible because other email clients can do it.

You can combine POP and IMAP accounts into a single view (View/Folders/Unified), and combine POP accounts into a Global Inbox. I'm not a TB programmer, and the ones who are seldom view this forum. If the current features don't meet your needs, submit a Request For Enhancement on Bugzilla.

Thanks yet again. The "Unified" view doesn't do what I want. I have submited a feature request.