Hello Everyone,
Reasonably new to the Apple Community so I am not sure if I am posting an updated correctly or not.
I want to say thank you to everyone who responded and offered assistance.
I was back at it this morning and after closing mail completely and opened a couple more times with Shift + Mail, closed and rebooted a couple times and now everything seems to be working correctly.
I generally use my mail pretty much like a data base, consequently I have a large amount of info in my mailbox files.
I should probably store or archive a portion of my mail inbox folder in lieu of leaving everyyyyything in my inbox.
I think I will look to see if I can find a good tutorial on Apple Mail that might allow me learn and use my mailbox folders more efficiently. Back in my pc and Windows days, I remember when the inbox reached XXMB everything locked up and stopped working.
Thank you again everyone, I am really happy knowing this community is here and available.