Pros : The tool is an efficient and wide range mailing tool including CRM features. It is a complete suite for Marketing. It's an overall good product.
Cons : It is quite slow, and takes a long time to load pages and interact with customers and segments. Some UI do not make much sense, as the way to access advanced search, or the way to access pre-existing segments. The biggest downside is their commercial policy: being a long time customer (4+ years) i was forced with a 10 days notice into a +25% price increase (on a big contract), and I had to conceede to a yearly plan to keep my pricing. I did not appreciate at all such a policy and will look for alternatives in the future.
Without these pricing issues, the rating would be 3,5. 4+ if the UI was faster and improved.
HubSpot