Comment 97 for bug 603402

(In reply to Tom Guyette from comment #61)
> Would it be possible to simply add a "Refresh folder" function to the "Get Messages" dropdown button
> that would perform a complete refresh of the current folder and Preferred Folder?

Tb already has button for "Refresh folder from scratch". It's called "Repair Folder" button :-)

> Better yet, add a Refresh button in the same row as Unread, Starred, Contact, Tags, and Attachment?

You are right.
There is no way to intentionally close mail folder in Tb.There is no way to force de-select of Mbox at a connection.
There is no way to force "uid fetch 1:* Flags" to recover from this bug by simple/easy operation.
Purpose of any workaround stated in this bug is : force "uid fetch 1:* Flags" for Inbox.
    Go Offline/Go Online : Force logoff -=> Tb has to do login, SELECT Inbox, uid fetch 1:* Flags
    max cached connections=1 : FolderX steels connection from Inbox => When Inbox is accessed, Tb has to do SELECT Inbox, uid fetch 1:* Flags
If "close/reopen folder" like button/menu will be implemented, it's helpful for this bug.
But there is no need of such button in usual use. Button only for working around problem(in this case, in both Tb and Gmail) is not usually implemented.

About IDLE setting : Server Settings/Advanced
About CONDSTORE : read Bug 912216, please.
About "adequate new mail check interval" :
   If "a few new mails per an hour", I believe "Check new messages Every 1 minute" is usually not mandatory.
   If "10000 new mails per an hour", I believe "Check new messages Every 1 minute" is not needed(rather annoying),
   because you can know about many many new mails upon each mail viewing. :-)