[quote user="Ginhead"]1) when you choose an IMAP account, can you have a copy of all the emails on your hard drive ? and (2) How does it work with the trays and folders in Pegasus Mail, does this structure is "replicated" on the server ?[/quote]
Good point: the ability to have offline email is an advantage of POP and a disadvantage of webmail. You can, however, have your cake and eat it with IMAP. Most IMAP clients allow for some form of "disconnected IMAP" under some name of other. I tend to keep everything server-side only myself, but checking in the help file I see offline use is definitely possible with Pegasus.
From the Pegaus Help file:
[quote]As you use an IMAP profile online, Pegasus Mail will build up a cache of information from the remote IMAP mailbox. This means that information about folders, headers and messages is stored locally on your PC. Pegasus Mail allows you to access this locally cached data in offline mode, without requiring any kind of network connectivity to the remote host. When you mount an IMAP profile offline, you can see all the folders in the profile, and can read any messages that are present in the folder cache. In offline mode, the IMAP profile is read-only - you cannot delete, change or add messages or folders in the profile while offline.[/quote]
You can highlight the profile and select the "use offline" button in the little "Manage IMAP Profiles" window to switch to offline mode.
As for subfolders, as I recall you would need to check the box "This server supports folders within folders" to see subfolders in Pegasus. Otherwise, since the namespace on most IMAP servers is "INBOX", so that in most email client interfaces every other folder appears to be a subfolder of INBOX, you end up only seeing the inbox.
Question (2) -- You should be able to modify your folder structure in Pegasus as you wish. For example, with Gmail, the folder "Gmail" appears to be what Pegasus calls a "tray". (With most IMAP accounts, INBOX would appear to be a "tray"). I could easily add a folder to the "Gmail" folder/tray, and it would then be there in the interface in Apple Mail on my Mac or in whatever else I logged on with from wherever. In fact, Gmail is a special case, since it lacks a proper folder structure and instead creates a "label" server-side to match any folder you create in your mail client, so that if you logged into Gmail's web interface you wouldn't see a folder but a new label ... but you get the idea. Changes to the folders you make in Pegasus are reflected on the IMAP server.