Monday, August 31, 2026: 7:29 PM: Note: If you’ve removed the Mail app from your iPhone and want to create a rule for handling iCloud email messages, you won’t be doing it via Safari on said device. Chances are also pretty good that you won’t be able to create the rule if your chosen replacement email app is Microsoft Outlook, either. However, if you’ve got access to a laptop or desktop computer, you can create rules via the iCloud email web interface to your heart’s content.
iPhone iCloud Email Rule Creation Mail App Note