Hi Rich! (and thanks to all for the latest 13.1!)
I saw the 100mb download. Another possibility is the Mozilla SeaMonkey suite, currently at ver 2.53.12.
At only half that size (about 53mb), you get the email client, browser, html editor, and chat. Like the old days - but shares code with firefox, thunderbird etc.
Depending on how hard core your email and browsing needs are, SeaMonkey could be a leaner-meaner option too.
Many options to download, build from source, etc:
https://www.seamonkey-project.org/Again - thanks to all for their patience and help over the years!