Ok, I thought that 'post' pre-dated lmtp and was the IMAP function to
write a message into the folder.
i.e. a program like imapsync would need the 'p' permission to write the
messages, (but would need other permissions to check for messages, set
flags, etc)
I think the only way to add a message to a folder via IMAP is APPEND or
COPY, which is what the "i" right controls.
i - insert (perform APPEND, COPY into mailbox)
Rob
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