Apple Mail won't login after Migration Assistant transfer I recently used Migration Assistant to bring data to a new Mac Mini from a Time Machine backup on my old Mac. After finishing, I am unable to connect to my mail account as it gives the error "unable to verify account name or password". I know for a fact that my password and account are correct, because I can still log into that mail account on my old machine using those credentials. 

I have tried:


restarting
deleting the existing mail account and trying to add the account back
Removing keychains related to mail from my keychain access under 'login'


Any help would be appreciated. Thanks!
I found a solution after searching around and trying things. 

The answer here led me to the solution. What worked for me from that post was deleting the folders in ~/Library/Keychains that had super long names of numbers and letters. Then I restarted the computer and tried to log in to mail and everything worked.