It offers marketing automation features found in systems like HubSpot or InfusionSoft but for a fraction of the price. The drip marketing automation features meet our needs.
And, their featureset has been increasing and growing over time.
The quality of the system has been very solid, uptime and responsiveness is good, and features work as designed.
Email deliverability has been very good as well. Review collected by and hosted on G2.com.