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WeOnlyDo! COM ImapServer ActiveX control is component that can be easily integrated into your applications to provide full IMAP4rev1 protocol server implementation. All you need to do is to put it on VB form, call it's Start method and it's immediately accepting connections by your clients! It fully supports commands defined in RFC2060. Since wodImapServer is COM object and not the full application, there's few things developer should look after - simply because COM objects cannot deal with information that should be preserved between the sessions. Most important is to keep UID information (UNIQUE ID) for folders and messages. If you do so - wodImapServer will work flawlessly with any client that connects to it. On each client action wodImapServer will fire appropriate event where you can internally handle the action and return positive or negative result. You should also deal with message flags. wodImapServer does not deal with message storage - you should do it by yourself. It will deal with structures and references to folders and messages - but actual contents of messages cannot be handled by wodImapServer. Rather, it will depend on your code when messages are accessed, hoping that you provided properly formatted messages and proper flag information. If you don't - it will not complain, but IMAP clients may... You should consider all wodImapServer folder as virtual folders - none of them doesn't necessarily exist on your system. Each time wodImapServer requires list of folders, or list of messages - event is fired to notify you to populate his collections with appropriate information - and that's all. You can keep messages in database, on external system, or wherever you need - as long as you can provide necessary information on wodImapServer's request.