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Yesware vs GMass: catalog facts
Yesware	GMass
Paid Paid plans with a 14-day free trial and no credit card required.	Freemium Paid plans are offered; check the developer's site for current pricing and free limits.
Windows, macOS, Web, Browser extension	Web, Browser extension
Works inside both Gmail and Outlook Real-time open, click and download alerts	Works inside Gmail with no separate mail platform Unlimited automatic follow-up stages
Paid after the trial Focused on sales teams rather than personal email	Tied to Gmail and Google Workspace accounts Chrome extension only, according to the research
Hosted service, Browser extension	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.