Delete all emails by subject or Email From
Ability to delete all emails for a particular subject or Email From.
The idea is to be able to delete all emails for a particular subject or subject keyword or Email From, instead of having to select each email individually to delete them.
This option will save time for the Users as well as reduce space being used at Yahoo servers.
It would be also good to have an option to customize the time a particular Email From or subject can stay active and be deleted automatically after X number of days.