Ah, those were the good old days. I *loved* Agent.

I think I kept using it for years after it no longer became really feasible to do so. It was text-only, so if I wanted to see rich-content emails I had to save them as HTML and open them with the browser. But oh did I love it.

I think I finally stopped using it around 2004/2005, when I switched completely over to gmail and didn't need a POP3 reader any more.