ReadNotify - ReadNotify enables the user to know when email is sent and the reciever reads the email.
Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.
Intelliverse Email Tracker - Intelliverse Email Tracker provides insights to increase the productivity of your emails.
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Komiko - Komiko is a sales intelligence solution to drive sales, retention and expansion.
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.