filters
Don't delete all of a user's filters when you switch to the new mail! After it switched to the new mail, I suddenly have no filters. I originally had 60+ filters, now they are all gone! Why do you do this? It would be really nice if the new mail would keep the already defined filters.
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Donna Sokol commented
I am having the same problem. My inbox is now a flood of junk mail that I previously had under control. :-(