4.0★
Rating
$29.95/mo
Price
No
Free plan
Users
Quick facts
- Starting price
- $29.95/month (Standard)
- Free plan
- No — free trial via Chrome extension only
- Best for
- Cold email campaigns inside Gmail
- Platforms
- Chrome Extension (Gmail-based)
Ratings by category
Google Workspace Integration4.4/5
AI Model Quality3.3/5
Ease of Use4.0/5
Feature Depth4.3/5
Value for Money3.8/5
Reliability4.1/5
Key features
- Gmail-native campaigns: launch mass email campaigns directly from your Gmail compose window — no external tool needed
- Automated follow-up sequences: set up multi-step follow-ups that pause automatically when a recipient replies
- Email tracking: per-recipient open, click, and reply tracking reported back into Google Sheets or Gmail labels
- A/B testing: test subject lines and email body variations to optimize campaign performance
- Inbox rotation: distribute sending across multiple Gmail accounts to protect deliverability
- Triggered emails: send automated emails based on recipient actions like opens, clicks, or link visits
Pros & cons
Pros
- Runs entirely inside Gmail — no separate dashboard to learn, campaigns launch from your inbox
- Unlimited email sending on all plans — no per-email or per-contact caps
- Powerful follow-up automation — multi-step sequences stop automatically when recipients reply
- A/B testing and triggered emails on Premium — solid feature set for serious outreach teams
Cons
- No free plan — the cheapest tier starts at $29.95/month, making it pricier than many alternatives
- Chrome extension only — no standalone web app or mobile support
- Minimal AI writing features — GMass is about sending at scale, not generating email content
- Can trigger Gmail spam filters if not configured carefully — warmup and rotation features help but require setup
Plans & pricing
| Plan | Price | Features |
|---|---|---|
| Standard | $29.95/mo Monthly billing. Annual plan at $249/year (~$20/mo). | Works inside Gmail, Unlimited emails, Mail merge personalization, Email tracking (opens, clicks, replies), Email verification, Custom tracking links, Spam solver, API access |
| Premium | $39.95/mo Monthly billing. Annual plan at $349/year (~$29/mo). | Everything in Standard, Automated follow-up sequences, A/B testing, Triggered emails, Inbox rotation, High-priority support |
| Professional | $59.95/mo Monthly billing. Annual plan at $599/year (~$49/mo). | Everything in Premium, Higher sending limits, Advanced reporting, Priority inbox rotation, Dedicated support |
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Miriam Alonso researched and verified this page. See our methodology.