Roger Hollings of killerstartups.com recently did a review of TMail21. Here’s a quote.
Though TMail21 works alongside existing email, it’s perfectly willing to kick traditional email to the curb. TMail21 looks to keep the best aspects of our standard emailing while adding a number of lightweight features that make it a better way to both communicate and work.
You can read the full review at http://killerstartups.com/startup-reviews/had-enough-of-email-try-tmail21
You can get started with TMail21 for free by clicking here.