My Mail app has always been glitchy. I don't want to migrate it over to a new computer. Would I be able to prevent this app and other apps from migrating over to new computer?

Oh, so the Mail app won't migrate over. That makes sense since my old MacBook (High Sierra is as far as it can go) probably doesn't even have the newest version of Mail. If this is the case, then I don't really need to worry that a dysfunctional Mail app would migrate over to my new Mini (unless there is a chance that "trouble" can migrate over through the migration of the mail data and settings). Yet, I do like the idea of setting up from scratch to avoid migrating any sort of crap or trouble over to my new computer. Might be safer/smarter to just enter the account data from my MacBook Mail accts into the Mini's Mail preferences, and really start from scratch.

This obviously means that most all if not all of the standard Mac apps in my MacBook won't transfer over, since they are older versions, and just the data and setting will migrate over, correct?

Oh, then there really isn't much to worry about then. Thanks.

Just thought of another question... I have lots of documents that I created for my business, lots of lists, programs, etc. on either Pages or Text Edit. If all my docs get migrated over, will they (like the old Pages docs) be able to be opened in the new most recent version of Pages and Text Edit?