GMass
Mass email and cold outreach, run right inside Gmail.
Overview
GMass is a Chrome extension that turns Gmail into a mass-email and cold-outreach tool with mail merge, follow-up sequences, and tracking. It suits solo senders, marketers, and small sales teams that want to run campaigns natively in Gmail without a separate ESP. It is tied to Gmail and Workspace, so deliverability is capped by Gmail limits and there is no Outlook or multichannel path.
Best for: Solo senders and small teams who live in Gmail and want to run cold email there natively, no separate ESP required.
Key features
Pricing
| Plan | Price | Includes |
|---|---|---|
| Standard | $29.95 per month | unlimited emails, mail merge |
| Premium | $39.95 per month | follow-ups, A/B testing |
| Professional | $59.95 per month | unlimited verifications |
Pricing changes often. Verify current pricing on the vendor site before you buy.
GMass demo
Pros and cons
Pros
- Lives inside Gmail with near-zero learning curve
- Unlimited emails, contacts, and campaigns
- Strong Google Sheets integration
Cons
- Tied to Gmail and Workspace, no Outlook
- Deliverability capped by Gmail limits
- Lacks deeper multichannel and CRM workflow
Integrations
Gmail
Google Sheets
Zapier
Salesforce
HubSpotSMTP servicesTop GMass alternatives
Links
Comparing GMass with Salesgear?
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See how Salesgear comparesReviewed July 2026. Data compiled from public sources; ratings via G2.