Typically, the default settings of the Mail app on your iOS device is set to local storage instead of mail server. The opposite also holds true. If you can’t access your emails on your iOS devices, then the settings on your Mac could be the culprit. In

Regarding email specifically, choosing the IMAP protocol in your email setup (in, for example, Outlook's desktop program) is the easiest for multicomputer access: It keeps a copy of all emails on the server until you delete them so you can access the

Give your email productivity a boost by getting all your messages in the same place, whether you use Android, iOS, Windows, or macOS.