Plug that serves pages useful for previewing emails in development.

• :csp_nonce_assign_key - a map of keys to assign to the conn.assigns.
  • :script - the key to assign the script CSP nonce to
  • :style - the key to assign the style CSP nonce to

Examples

# in a Phoenix router
defmodule Sample.Router do
  scope "/dev" do
    pipe_through [:browser]
    forward "/mailbox", Plug.Swoosh.MailboxPreview,
      csp_nonce_assign_key: %{script: :script_csp_nonce, style: :style_csp_nonce}
  end
end