I would build you a list of B2B ideal prospects that suits your business(acc. to ICP) with an accuracy of 96%(promised). These leads would be identified from different social media channels and email addresses would be verified using human intelligence with the help of some automation tools. I had an experience of 2+ years as a Manager of the outbound marketing agency and had helped various clients with B2B leads from different industries and from various locations such as the USA, Canada, and the UK.