Bizzabo

I've used Bizzabo for my conferences Cloud Factory and TractionConf.io. Bizzabo helps us manage the entire customer relationship from the the time they hit our ticketing site (you can build a site with Bizzabo) to buying a ticket (using Bizzabo) to retargeting (Bizzabo enables you to email those who started registering but dropped off - retargeting has provided us with over 50% conversion rate!) to check-in to continuous engagement before, during and after the event (via Bizzabo app, CRM, email). Their customer service is second to none and I haven't found another ticketing provider on the market that enables you to manage the entire value chain for the ticket holder. Overall, Bizzabo is a complete ticketing solution and has been a great experience for us.