How can I sync all three of my email addresses to update immediately
How can I sync all three of my email addresses to update immediately instead of one address updating immediate and the other two email addresses every 2 hour hour or more. How can they all be synced?
1st
ranked

If you’re using the webmail version of Yahoo Mail at mail.yahoo.com, please try these steps to fix this issue: https://help.yahoo.com/kb/sln2891.html
In case you’re using a third party email app, try removing/re-adding your Yahoo accounts,