Mail Doesn't Update Unless Open
I have four email and one Calendar accounts, and unless I open the Mail app, they will not update. Each account is set to Fetch (every 30 minutes), with Push set to off. This has never been an issue until recently, the only change I can think that would have caused it is a software update. Until whatever broke this, I have always had my emails updating without the need to launch the mail app, so it's frustrating to have to open Mail to check my emails.
I've done some searches and done some suggested 'fixes' such as toggle Push on/off (it's still set to off), and the obvious restart, but no change.
Anyone have any suggestions on how to fix this?
Thanks
Martin
iPhone 13 Pro, iOS 15