Marketing & Email
GMass
Send mail-merge and cold email campaigns directly from inside Gmail.
4.8· 1,270 reviews· via G2
What is GMass?
GMass is a Gmail extension for sending mass email, mail merge, and cold outreach campaigns without leaving the inbox. It layers personalization, tracking, automated follow-ups, and list management on top of a regular Gmail or Google Workspace account.
Best known for: Sending cold email and mail merge from inside Gmail
Key features
- Mail merge with personalization from Google Sheets
- Automated follow-up sequences
- Open, click, and reply tracking
- Free built-in email verification
- Inbox rotation for improved deliverability
- Scheduling and A/B testing
Who GMass is best for
- Solopreneurs and small teams doing cold outreach
- Gmail-based users who want to avoid separate ESP tools
- Recruiters and sales reps sending personalized mass email
Ideal team: Solo operators and small sales or outreach teams that run everything inside Gmail.
GMass pricing
Standard
$29.95/per user / mo
- Unlimited emails and contacts
- Mail merge personalization
- Open and click tracking
Popular
Premium
$39.95/per user / mo
- Everything in Standard
- Automated follow-up sequences
- Triggered and behavior-based emails
Professional
$59.95/per user / mo
- Everything in Premium
- Inbox rotation for deliverability
- High-priority support
Costs to watch before you commit
- Advertised low prices ($20/$29/$49) require annual prepay; month-to-month billing costs more
- Free email verification and inbox rotation are gated to higher tiers
- Priced per user, so team costs scale quickly as seats are added
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