WebGazer - Monitor your website's availability with WebGazer, review its performance and get instant notifications when your website goes down. No installation required and free plan available.
Gmail Mail Merge - Send personalized emails with attachments
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Inbox Grader by Freshworks - Free metrics 📈 for your business and team email ✉️
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
Dynamic Campaigns by Sigstr - Share the most relevant content in every email