[Seirdy]

Email clients that for whatever reason allow sending HTML email typically default to sending multipart messages with a normal plain text version as well. Emails that are HTML-only are typically marketing or unsolicited noreply junk.

I normally browse with a browser that doesn't even support JS (Lynx, NetSurf, or Dillo). Glad to know that anyone who doesn't use a browser developed by a company running on billions of dollars a year is just being "silly".

If I am compelled to use a "modern" browser, I turn off JS, cookies, remote fonts, WebGL, and any third-party resources and enable them on a case-by-case basis if the website is important enough (it usually isn't). Most sites worth visiting work much better when I do this.