[Dovecot] Also - is there a reliable way for TB to know it is connecting to a dovecot server?

[Charles Marcus]

Hmmm... I just had another thought...

Would it be possible for a standalone IMAP client like TB to somehow
download dovecot's indexes and make use of them locally?

So, for example, instead of downloading the headers for 10000
messages in a folder, it could simply download and utilize dovecots
index(es) for that folder?

I'm just trying to think outside the box with respect to large IMAP
stores and how to improve the performance - both initialization (the
first time a client connects to an account) and ongoing search...

-- 

Best regards,

Charles