One Apple Mail feature nobody here has commented on was called Piano Mover internally. I don’t know the public marketing name. It lets attachments over 10MB in emails be replaced with iCloud hosted file references.
One Apple Mail feature nobody here has commented on was called Piano Mover internally. I don’t know the public marketing name. It lets attachments over 10MB in emails be replaced with iCloud hosted file references.
the marketing name is "Mail Drop", and it is separate from iCloud mail; though it should only fire if there's a 20mb+ attachment on the email.
cloudd is used by a shit-ton of services though, so I'm not sure how to track it down without better tracing of what actually initiated the call, or the contents of the call.
edit: tomasf nailed it - https://news.ycombinator.com/item?id=49158388
I think every major email hosting provider (that's not a dumb IMAP only platform) has some variant of this.