Affinity - Relationship Intelligence, Reimagined
Right Inbox - Schedule Emails in Gmail To Be Sent Later
Zapflow - Zapflow is a cloud-based tool for professional investors to manage their deal flows.
Recurrr - Send recurring emails
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.
FollowUpThen - The simplest way to schedule an email reminder