Would you be willing to pay that amount for an open source project without the official backing of Mozilla? Because I was under the impression that the source code to Thunderbird was, in fact, available under an open source license.
never heard of it, looked at "Download", saw a big apple and a big window, no penguin. fail. also closed source AFAICT. thunderbird would be an incredible email app if only it had better maintenance.
Well it does the job already, working just fine for the 31-years-old IMAP protocol, the 33-years-old POP protocol, the 18-years-old RSS protocol, etc.. I might like an "incredible" email app but all I really need is a "sufficiently solid" one.. =)