For years I have had two gmail accounts, one for my busienss one for my personal.
For years before that I ran it all from my personal.
On top of that, I screwed a setrting and some of my personal email went out with a reply to my business address.
So now I want to untangle this.
I use labels a bunch. So lets suppose I I have all the old business messages in my personal accout (about 10,000). They are all labeled "Farm"
I slurp them down in batches of 100 (most are just text)
With each download, I follow that up by labeling that batch "slurped" At the end of my day, I can trash all the ones labeled slurped, wait for gmail to catch up, then empty the trash.
Now, in another terminal window, I restore to my actual business account.
Will they be in the correct place, or will they have new dates?
Will threaded messages still be threaded?