GMass is a Gmail and Google Workspace extension for mail merge, mass email, and cold outreach with automated follow-ups and a dedicated cold-email sending server. It is popular with solopreneurs, recruiters, and small businesses who live in Gmail.
Pros & cons
✅ Pros
- Works natively inside Gmail
- Mail merge plus cold email features
- Dedicated cold-email sending server option
- AI templates and spintax
⚠️ Cons
- Tied to Gmail/Workspace ecosystem
- Gmail sending limits without server add-on
- Less suited to large multi-inbox ops
Who it's best for
Gmail users and small teams wanting mail merge and cold email without leaving the inbox.
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