Eudora finally shows it's age

Up until the last few months I've been quite happy with Eudora 6.2.4b6 
(the latest & last) for OS X .

However recently I've been receiving a few Emails containing what may be 
X-HTML data, which Eudora can't handle. These Emails are also broken 
into two or more parts in my In Box.

I can access these Emails using web mail; the browsers can handle it.

Tried a test with Thunderbird and it couldn't handle this new formatting.

Apple's OS X.4.11 Mail can handle it, but I'm not going to use Mail as 
there a few things about it I don't like.

I'm wondering if the coming (?) new Eudora will be able to handle it, or 
if it will be added to Thunderbird?

G