>Does #1 mean that there are IMAP servers where my phone and my desktop and my laptop (etc.) can't all read my mail simultaneously? I think they are talking ab

>Does #1 mean that there are IMAP servers where my phone and my desktop and my laptop (etc.) can't all read my mail simultaneously? I think they are talking about one particular client instance. In other words, you should have some data structure where you can look up a connection by mailbox and use that existing connection rather than opening a new one.