Re: [Nmh-workers] exciting new stuff for 2.0 (IMAP proposal)

[Ken Hornstein]

>Sequences are a different problem. Since MH has both public and private
>sequences, I would argue that the only truly "public" sequence for an
>IMAP folder is one that is stored on the IMAP server. This could be
>done with a file on the server, since IMAP allows fairly free form
>file retrieval, or it could be done with flags where the server permits
>the definition of new flags. I don't think there would be performance
>issues with either option, but using flags is definitely better for
>data integrity where the mail might be accessed by different clients.

When I looked at this before, a large number of IMAP servers didn't support
flags, or had a bunch of limitations on them.  I think the only sequence
you can be guaranteed to support is unseen.

--Ken