Last updated March 24, 2026
GMass
StartupCold email at scale without leaving Gmail inbox for Gmail power users
Best for: Gmail power users wanting cold email at scale without leaving their inbox
Target Audience
Gmail power users, solopreneurs
Overview
GMass enables cold email campaigns at scale directly inside Gmail with mail merge, automated follow-ups, A/B testing, and detailed analytics without ever leaving the Gmail interface.
Key Features
Integrations
Pros
- Lives in Gmail
- Simple to use
- Affordable
- Good for mail merge
Cons
- Gmail only
- Sending limits apply
- Basic compared to dedicated tools
- Limited multi-channel
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