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 <r...@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.
