getting rid of hundreds of email files?

[Rak]

You can select from the start of the one you want to get rid of, hold down the command key or control key (I think it is in Windows) and select to the end of the oldest email. Than either drag and drop to trash or select delete. Cache? Are the emails on your computer, couldn't hurt to clear a cache file. However if they are in Yahoo email on line don't open them just use the selection process I described and delete them. You can either go through all your folders and delete within the folder based upon date, or drag everything back into the inbox, select all, uncheck those you want to keep and delete the rest.