Mailsuite

Mailsuite is a Gmail email tracking tool for individuals and teams that need read receipts, open and click tracking, and follow-up signals directly in email workflows.

Key capabilities include:

• Unlimited open tracking with Gmail-style double checkmarks (✓✓), plus real-time notifications for opens and link clicks
• Individual tracking in group emails, with a full open history to see when each recipient engaged
• Follow-up reminders and alerts for emails that have not been opened within a set window
• Outreach tools for mass email campaigns (up to 10,000 emails) with scheduling and mail merge personalization from Google Sheets

Pricing: Freemium, with a Free plan ($0/user/month) and paid tiers (listed as $9.99 to $11.99/user/month) that add features such as no signature, priority support, campaigns, full history, and PDF tracking.

Notable for its Chrome extension and Google Workspace availability, support for PDF tracking certificates, CRM-style features like auto-BCC, Zapier integration, and a tracking pixel detector, plus stated GDPR compliance and a large installed user base (1M+ Chrome Web Store installs; 2M+ active users in the research brief).