Strike - Share your experience and hold businesses accountable 👊
Mixmax - At Mixmax, our mission is to change how the world communicates. We’re an email productivity platform that helps sales, customer success, and recruiting teams do their jobs better.
dip - accountability groups for developers
Boomerang for Outlook - Boomerang for Outlook offers email productivity tools to track, schedule and send mails at the right time.
Rainmaker - Rainmaker allows you to make your Google Contacts better.
Mailtrack.io - The best email tracking solution I've found. Free