How to limit Apple Mail (desktop)?

[Rupert Gallagher]

When Apple Mail connects to an IMAP account for the very first time, it downloads all e-mails to build a local mirror.

When the user changes the name of a folder, Apple Mail downloads the whole subtree and erases the old one.

We have Apple Mail users with >20GB worth of e-mails, downloaded multiple times (horrified emoticon here).

Sent from ProtonMail Mobile

On Mon, Oct 30, 2017 at 10:38 AM, Rupert Gallagher <ruga at protonmail.com> wrote:

> By default, Apple Mail downloads all e-mails from  server's account. Previous versions of this client allowed to opt-out. The latest two versions? however, only allow to opt-out from downloading the attachments.
>
> The stress on the server is unbearable. We cannot ask users to be considerate: this is the default behaviour of Apple Mail.
>
> We need a server-side solution to the problem.
>
> Please share your ideas.