How do I reinstall Mail to my 2014 MacBook Pro running on Big Sur?
I was having all sorts of problems sending and receiving emails on my 2014 Macbook Pro. I had backed everything up with Time Machine as well as using Apple's storage or 2tb. I thought I was all set. It had been suggested to delete Mail completely and then reinstall. Deletion wasn't a problem, straight forward.
The problem began when I tried to reinstall it. I wasn't allowed. Reading through a search on Google, it would appear I will have to reinstall my macOS and Mail will come with it.
How do I find, how to reinstall macOS 11.7...?
iPhone 16 Pro, iOS 18