What is a 'successful' click rate?
It is difficult to generalise about successful click rates, as emails sent from companies in different industrial sectors vary quite significantly in their average click rates. For instance, companies that relate to a customer's hobby (e.g. canoeing) might well find that their average click rates are higher than, say, for those selling pharmaceuticals. However, you should aim for a click rate of above 5% to be ahead of the game.