> 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? The short answer is that y

> 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? The short answer is that you can access from multiple device. The long answer is, it depends on the server datastore implementation. Namely, any server using mbox will probably lock the mbox file to the first connection, and hence allow one connection per mailbox (folder). Most large scale servers won't use mbox, though. The problem is described, in the original article, from writing an IMAP client perspective. You can't assume _all_ servers will allow multiple connections, even if most do.