The SelectMailbox method is used to select a mailbox in
read-write mode. If the client has a different mailbox currently
selected, that mailbox will be closed and any messages marked for
deletion will be expunged. To prevent deleted messages from being
removed from the previous mailbox, use the UnselectMailbox
method prior to selecting the new mailbox.
The special case-insensitive mailbox name INBOX is used for new
messages. Other mailbox names may or may not be case-sensitive
depending on the IMAP server's operating system and
implementation.
To access a mailbox in read-only mode, use the
ExamineMailbox method.