my email mygrated to yahoo

I did and yahoo told me they can not help because is a comcast server and to call comcast. So i guess I am out of luck and lost 2 accounts. Seriously thinking to switch 

@user_jqjigl​ 

Let me make sure I understand, but I am pretty sure I don't.  You have three comcast.net accounts.  One was migrated and the other two haven't been?  Or, all three migrated, but only one is able to download comcast.net email and the other two try but don't make it.

Are you signing out of each account and signing in to another account?  You are signing in with your comcast.net credentials, right?

Yes one account is working the other 2  cant retrieve the mail and it tries to download mail from 2017, but it is the same mail that keeps repeating and can not be deleted yahoo told me that it is on the comcast servers and they can not access them. Some body posted that he had the same problem and deleting the mail worked for him but I cant not delete mine cause i no longer have access to comcast mail only thru yahoo. It is going on for 3 weeks very frustrating    

The yahoo server keeps saying it can not delete because of to many requests?

@user_jqjigl, can you give us a bit more information on this...  i.e. - are you trying to sign in via a web client or are you using an email program like Outlook or Thunderbird?  If a client, which client, and what version?