Re: 460MB of code?!
You're welcome to your opinion (I know other people who irrationally love Eudora without ever being able to give one point in its favour other than that they're used to the mess.)
However... I have actually used Eudora myself and had to deal with it on other people's PCs now and then (within the past year, too), and it IS inevitably a horrible mess. Bloated is subjective and relative perhaps, there are undoubtedly even more bloated clients out there... but regardless, those piles of old libs that aren't otherwise on the system is Eudora induced bloat.
Old is fine by me - I use loads of software that is ancient and great - but this was pretty horrible decades ago and hasn't improved any with age!