Nothing goes out from this page until you press a red-lettered "Send to N people" button and confirm. Test emails go only to the address above.
What people tick on the preferences page when they unsubscribe or turn something off. The link in every footer leads there.
Opens and clicks are counted per unique recipient. Numbers can take a few minutes to catch up after a send finishes.
Projects save to the server on their own. Use this box to copy a project out, or paste one in and press Load.
Start a new project from a template. The project you have open stays as it is.
Saved templates stay on this device when the browser allows it. To keep one for sure, Export it as a file and Import it later.