I've used Eudora to manage my emails for over 10 years, loved the software, but now with OSX Lion looming on the horizon (thus putting Eudora on ice since it relies on Rosetta to run) I'm looking to migrate over to another Mac-based email client and I wanted to ask which one do people prefer using the most with their systems, and why it serves them well? The requirements I'm personally looking to fulfill are: 1) The ability to manage my two primary email accounts off my hosted web-servers onto my local computer; thus I'm not interested in using a web-based solution like Gmail. 2) To be able to read all my email accounts through this primary account, including my Gmail, Yahoo! and MSN accounts (and if possible to aslo be able to respond to messages to each of those accounts as if I'm in the specific email account via personality settings). 3) A reliable search function to sift through messages, the speedier the better. 4) import 10 years worth of emails (about 12,000 messages) from Eudora, with as little pain as possible. 5) Ideally have a half decent & user friendly UI system. So far in my initial research I've track down these apps as having the most potential to do what I'm looking for listed above: - Apple Mail - Entourage - Outlook - Postbox - Sparrow - Thunderbird If anyone could share their thoughts, suggestions and/or insights regarding which of these email clients is more worthwhile to use over the other (including any that I overlooked) that would be greatly appreciated, thanks!