[Dovecot] Using MySQL to store email?

[nodata]

> Here's an example of what I would do with a MySQL backend.
>
> I have an inbox where I get email for a wide variety of subjects. One of
> those classifications are customers. So I would create a customers
> folder and have a rule that if an incoming email from address match any
> email address in my customers folder then the mail would be delivered
> there. That way if I get a new customer then all I have to do is drag
> the first message into the customers folder and all other mail from that
> person would go into that folder.
>
> To do this with MySQL would be trivial. To do it without a database
> isn't possible.

You can do this with mail rules.