I love Postbox. It's been my primary email client ever since I was forced to switch from Eudora. It even supports Thunderbird plugins with some small tweaks (

I love Postbox. It's been my primary email client ever since I was forced to switch from Eudora. It even supports Thunderbird plugins with some small tweaks (mostly just recognising the Postbox User Agent). My biggest complaint about Postbox is that it's too cheap. It's only $15... I paid more than that for my Twitter client. Email is mission critical for me, so I'm happy to pay at least $50 (maybe $50/year?) for whatever is the most efficient, powerful & reliable email client. I want to pay that money to a company so they'll keep developing & advancing the program, not abandon it like Mozilla is doing now.