Many rely on the Apple Mail App that is on iPhones, iPads and Watches, especially for those who use it work purposes, although it can sometimes be a nightmare when it suddenly has an outage and people aren’t able to receive or send emails. There can be a few issues, which can cause this certain app to not be working that’s, bugs, haven’t updated to the latest iOS or your local network provider is currently having problems.

Apple Mail Reports
@Apple can you please revert back to photographs being attachments in emails and not embedded into the mail, this is causing all sorts of problems it’s a pain in the backside & increased workload. There are pages of complaints in the community website