Shipping system to link to royal mail/ etsy?

[HAHlala]

Hi, I'm getting a lot of orders through etsy at the moment and for eBay I ship everything with Royal Mail 'click and drop' and that links to my eBay so I don't even have to add the addresses or anything so its very quick and easy, however for etsy they don't have an option to add it to your royal mail account so it means I have to manually enter every single name and address of the buyer which can become a bit tedious when you have 200 orders a week to get through. Does anyone know of any software that can link up my etsy to buy royal mail shipping labels easily? I know there is some but the ones I have found don't sync with etsy. Thanks!