I love Rapportive! Boomerang (http://www.boomeranggmail.com/ http://www.boomeranggmail.com/) for scheduling emails, I especially love the follow up feature: yo

I love Rapportive! Boomerang (http://www.boomeranggmail.com/ http://www.boomeranggmail.com/) for scheduling emails, I especially love the follow up feature: you schedule a follow up email to send at a certain time but ONLY if there is no reply. If there has been a reply, the email will be cancelled. Started using Sidekick by Hubspot (https://app.getsidekick.com https://app.getsidekick.com) recently to track opens and clicks in emails, that's been useful too. I used to use Yesware but Sidekick is, so far in my experience, much better and provides more detail.