Yep, typically these type of emails are scams and when they're telling you doubling your money without even having to take risk and easily. If there are links that are included on the email, safety first and it's best to ignore them and never click any of those. Do not be a victim of these because they're targeting greedy people and even if we'll give some reminder to many, there will be some that will be able to slip and misses these reminders and still becomes a victim of these scammers. They've made already an impression to other people that this is how people make money from crypto investing, no, don't get fooled and don't invest. Be informed and don't be greedy.