Is mailstrom.co Safe?

Awesome way to organize your email. Easy to use. Helped me get rid of a ton of spam. and each user or company has it's own file so if a company spams you it will just be in one folder. Also since the emails from 1 person is all together you can respond real quick and easily. It also organizes emails by time, date, social network, list, shopping, and file size. I think you have to have a gmail account though to use it. You can also delete thousand of emails at the same time by deleting the whole folder or by selecting the emails you want to delete. Easy too use and looks nice.