TIL: Reading Gmail in Emacs with mu4e on macOS

I like writing email in plain text and I wanted to read email without leaving Emacs. Most guides I found either target Linux or go straight to OAuth2 — which involves registering a Google Cloud project, setting up credentials, and running a local token server. That felt like too much for something that should be simple. Turns out App Password is enough, and the setup takes about 20 minutes. What…