So, this is pretty cool. For those here who appreciate FastMail, looks like they recently updated their side to allow for iOS/macOS push support for calendaring and contacts via CalDAV and CardDAV, respectively. Their blog post: https://blog.fastmail.com/2016/10/10/push-sync-for-contacts-calendars-now-available-on-ios/ In conjunction with their support of push mail on iOS as of last summer or so, they now support push mail, contacts, and calendars on Apple hardware -- just like iCloud and, in some respects, better than iCloud. Unlike Apple's own implementation, FastMail also synchronizes message state (e.g., read, unread, so forth) via push. I currently use FastMail for mail, but iCloud for everything else -- contact info, calendars, notes, photos, reminders. I am not a heavy user of iCloud Pages/Numbers/Keynote nor do I use Find Friends. I haven't been using iCloud Drive but have considered it with the changes that came with Sierra. I occasionally use the FastMail web interface versus Apple Mail. I don't like having split services. However, I'm curious what the technical folks of MacRumors think -- any inherent pros/cons to switching PIM-type information over to FastMail entirely?