Zenbe - Free Email, Now For All and Threading Conversations

Zenbe, free email dhyāna, has lost and gained: it is missing the "beta" label and comes with two new means to get to the right messages faster.
A single click on Favorites focusses your inbox on messages from key senders and another click, this time on the somewhat hieroglyphic speech ballon, organizes emails in threads.
›› Zenbe organizes your emails and attachments (from Zenbe and existing POP accounts) with labels and search — and integrates calendar, to-do list, twitter and Facebook updates, too.