Mutt
An email client for the terminal.
Mutt is an email client that people have been working on for thirty years. It’s entirely text-based and runs in a terminal. Neomutt is a fork that adds some quality-of-life features, and it’s the one I use.
Installation
I like to keep a copy of my email offline, on my own computer, while still keeping the inbox in sync with the server so I can reach it from a mobile dingus. isync does the synchronizing.
sudo apt install isync msmtp neomutt urlscan w3m
w3m is in there because a lot of mail now arrives with no plain-text alternative, and w3m renders the HTML version legibly.