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GMass vs Yesware: catalog facts
GMass	Yesware
Freemium Paid plans are offered; check the developer's site for current pricing and free limits.	Paid Paid plans with a 14-day free trial and no credit card required.
Web, Browser extension	Windows, macOS, Web, Browser extension
Works inside Gmail with no separate mail platform Unlimited automatic follow-up stages	Works inside both Gmail and Outlook Real-time open, click and download alerts
Tied to Gmail and Google Workspace accounts Chrome extension only, according to the research	Paid after the trial Focused on sales teams rather than personal email
Browser extension	Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.