I use aerc, which is similar to this, but written in Go. Most of these TUI mail clients have a configurable filter option for different MIME types. I've found

I use aerc, which is similar to this, but written in Go. Most of these TUI mail clients have a configurable filter option for different MIME types. I've found that this program does a great job as an HTML to text filter: https://github.com/jaytaylor/html2text https://github.com/jaytaylor/html2text I think the classic approach is to use something like lynx or w3m with networking disabled, but I wasn't impressed with the output.