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CloseReview for ExQuilla for Exchange by survient
Rated 3 out of 5 stars
For smaller mail accounts this should work just fine, but when you're running with a larger mailbox with 15-30 subfolders and quite a few archived messages this thing begins to slow to a crawl. For comparison IMAP is able to handle the load just fine(2-8% CPU usage on average), though my office only allows exchange protocol outside the office network so I deal with ExQuilla.
The license cost is worth it, a project like this doesn't grow on trees. Evolution works, but isn't cross-platform like Thunderbird(the evolution ports are no longer developed).
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