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