I have been using this program to market my business since 2013, it has helped me reach more people with less effort than any other platform out there! It's easy-to use interface makes creating campaigns fast & cheap which is great when you're bootstrapping or starting up an eCommerce store that doesn't need huge budgets behind them (like myself).
There are some things about their website UI/UX where they could make improvements but nothing too major - just minor stuff like font sizes etc. They do offer discounts if you buy in bulk so definitely check those prices before purchasing anything from them as well!! Their customer service team will help guide through all of these tasks once onboarded at no additional cost by providing support tickets via email.