Scans your sources for Tailwind classes, runs the tailwindcss binary,
and writes the class → inline-style map that PhoenixEmail.Tailwind uses
at render time.
$ mix phoenix_email.tailwind
Configuration (config/config.exs):
config :phoenix_email,
tailwind_content: ["lib/**/*.ex"],
tailwind_config: "assets/tailwind.config.js", # optional
tailwind_map_path: "priv/phoenix_email/tailwind.map",
tailwind_bin: "/usr/local/bin/tailwindcss" # optionalRe-run after adding or changing classes in your templates — wire it into
your assets.build and test aliases so it stays fresh.