I collect my mail from Yahoo using POP3 with my desktop email app (Pandora). I have it set to delete mail for each of the three addresses I am using from the server after 7 days. Previously, using Pandoa and before that Eudora, this setting worked when my email Server was Cox.net. Why are you not doing that? Across the three addresses you say that I have an accumulation of 15k in my inbox. Deleted messages get reloaded and, sometimes, not-deleted messages get duplicated.