Scaling to 10 Million IMAP sessions on a single server

[Tanstaafl]

On 2/22/2017, 3:46:08 PM, KT Walrus <kevin at my.walr.us> wrote:
> I want to use mdbox format but I have heard that these index files do
> get corrupted occasionally and have to be rebuilt (possibly using an
> older version of the index file to construct a new one). I worry that
> using mdbox might cause my users to see the IMAP flags suddenly reset
> back to a previous state (like seeing previously read messages
> becoming unread in their mail clients).

This is the only reason I haven't moved to mdbox myself. I really,
really wish there was a way to not have to worry about losing flags.