Apple also does this with their "Notes" app and IMAP servers. (You have to turn on "Notes" for that service in the "Internet Accounts" settings panel.)
It looks like I still have some notes in Fastmail from testing it out back in 2016. I thought IMAP as sync/storage was an interesting idea at the time, but didn't get around to using it. At one point I was considering it as a backing store for recipes.
This feature in Apple's software is there so it would be compatible with Exchange ActiveSync (a requirement by some organizations that have installed the latter placed on using the former).
> Apple also does this with their "Notes" app and IMAP servers. (You have to turn on "Notes" for that service in the "Internet Accounts" settings panel.)
Yeah, I've used this in the past to let family mark domains / addresses for email whitelisting. Needed some finagling because the notes are quoted-printable HTML but easy enough to feed the info into rspamd via redis keys.
It looks like I still have some notes in Fastmail from testing it out back in 2016. I thought IMAP as sync/storage was an interesting idea at the time, but didn't get around to using it. At one point I was considering it as a backing store for recipes.