GMass vs Instantly
Choosing between GMass and Instantly? Both are popular tools for cold email, but they take different approaches. GMass focuses on individuals and small teams who want simple cold email directly from gmail, while Instantly is designed for high-volume cold emailers and agencies who need unlimited sending accounts. GMass is more affordable at $25/mo vs $30/mo. Below, we compare them feature by feature to help you decide which is the better fit for your outreach stack.
Last updated: February 2026GMass
Gmail-based cold email tool with mail merge, auto follow-ups, and campaign analytics.
Instantly
High-volume cold email platform with unlimited accounts and built-in warmup network.
Feature-by-Feature Comparison
| Feature | GMass | Instantly |
|---|---|---|
| Starting Price | $25/mo | $30/mo |
| Free Plan | ||
| Free Trial | No | 14 days |
| G2 Rating | 4.7 | 4.8 |
| Best For | Individuals and small teams who want simple cold email directly from Gmail | High-volume cold emailers and agencies who need unlimited sending accounts |
| Year Founded | 2015 | 2021 |
| Features | ||
| Gmail-native interface | ||
| Mail merge | ||
| Automated follow-ups | ||
| Campaign analytics | ||
| Email scheduling | ||
| Google Sheets integration | ||
| Email list builder | ||
| Unsubscribe management | ||
| Unlimited email accounts | ||
| Email warmup network | ||
| Unibox for reply management | ||
| A/B testing | ||
| Lead database add-on | ||
| API access | ||
| Account rotation | ||
| Pros | ||
| Key Advantages |
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| Cons | ||
| Limitations |
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Our Verdict: GMass vs Instantly
GMass and Instantly both have their strengths, but the best choice depends on your specific outreach needs.
Choose GMass if you prioritize works directly inside gmail — zero learning curve. It starts at $25/mo with a 4.7/5 G2 rating and works best for individuals and small teams who want simple cold email directly from gmail.
Choose Instantly if you need unlimited email accounts on all plans. It starts at $30/mo with a 4.8/5 G2 rating and is designed for high-volume cold emailers and agencies who need unlimited sending accounts.
If neither is the right fit, we recommend FoxReach — it combines cold email automation, built-in warmup, AI replies, and deliverability monitoring in one platform, starting from a free plan.