For you to use for yourself and download the posts you want or for your followers to find you? Remember, inbox and outbox are lists for your followers to find you.

For me to check myself if some relays Inwas connected to is not working more properly, or if I am not connected to once I was and paid for. Talking about otbox and general relays.

Those things should be on the general section on Amethyst. But other clients may very