[OS X TeX] What is hijacking a thread?

[BenBehr]

On 05.11.2008, at 14:55, Juergen Fenn wrote:

>> Hi, i am using Mail and i am not really satisfied either. Do you have
>> any suggestions for a good easy to learn plaintext mail client?
>
> Try Thunderbird. It seems to be the only serious alternative to Gnus  
> and
> mutt.

But isn't Thunderbird on a mac just like thunderbird for win? So again  
a graphical mail Client?
Are Gnus and mutt only text based clients?
Thanks,
Ben