As you know I have not used the macOS Mail App for many years. It you have one iCloud email account, it is not too bad. But, if you manage several email accounts like I do, it is just a pain to use. Never fear, there are several third party email Apps for the macOS. This article lists 5 alternative email Apps. I might add the more traditional style Postbox App to this list as well. Personally, I have used Airmail for quite a while and really like it. If you are looking for a different email App, check out the article.