Auto-sell equipment

You can choose to auto sell equipment based on rarity to keep your bag from getting full of undesirables depending on how often you are able to sun into the game.

You can reach this setting via the Battle icon > Chat > Config tab (I know, really!)

For example if you check in once or twice a day you might want to set it so that white gear is sold so that when you return your bag holds more valuable items for smelting.

If you check in less often, removing greens may be beneficial. It takes a very long time for your bag to fill without greens or whites.