newbie question on a dovecot buffer

[Plutocrat]

On 06/11/2019 01.41, Richard Bown via dovecot wrote:
 > Can I use Dovecot as a buffer between my mail providers Dovecot servers
> and the several IMAP mail clients on my own network ? 
> ie,  so Dovecot would mirror the mail on my account with my mail provider, So my local dovecot server downloads mail and caches/stores on the local SBC and all the local users use IMAP from that, instead of from my mail provider.

I'm by no means an expert, but I've seen this mentioned before, and it seems that you may be asking about this:

https://wiki.dovecot.org/Replication

P.