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I'm currently working on a beempy update that allows it to change the recoveryaccount without python knowledge :).

I don't know that but I deem it rather likely that it works with vessel as well. Also, if you know a bit of python you could use @holger80's beem to achieve what you want. Using beem probably is the "safest" way if you know what you are doing but also requires the most knowledge and can go horribly wrong if you don't know what you're doing.