After 2 weeks testing...
My first review, and I feel much obliged to do it :)
Compared with my experience using other email sending platforms (I've used most of well-known ones), I'm so impressed with Instantly. The interface is so clean and easy to navigate, really straight forward yet it has everything you need to optimize a campaign. Even if Instantly is your first cold email tool, you'll understand it instantly.
It's such a powerful tool that I felt so happy and proud when bought it. It currently under massive improvements. The development plan as well as the progress are really promising. The support and community are great.
Soon, in a very near future, instantly might become one of the best emailing tools ever exist. Get it while you can!