Slack Message Buttons - Making messages more interactive with buttons
Customer.io - We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users
Tab Butler - A tab manager at your service.
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Steward - Steward provides on-demand sales research and operations support.
If No Reply - Simple email automation that works for Gmail