These days, there are hundreds of great systems out there for this kind of thing, so pick your poison. I like Drip.com a lot right now, but my team is constantly working with new systems. It’s probably that I don’t like spend money if I don’t have to. What’s working well for us now is a mixture of Drip.com as the email automation system, paired with Pipedrive and a set of zaps from Zapier. We integrate all these systems into Slack so the team can see what’s going on all the time.