Tool comparison · Head to head
GMass vs Instantly
A factual comparison of features, pricing, and capabilities.
Updated 2/6/2026
Line by line
Pricing comparison.
Monthly rates shown. Annual billing may offer discounts. Visit official sites for current pricing.
Capabilities
Feature comparison.
| Feature | GMass | Instantly |
|---|---|---|
| Works inside Gmail | ||
| Unlimited emails, contacts, and campaigns | ||
| Mail merge personalization | ||
| Free email verification | ||
| Automated follow-up sequences | ||
| A/B testing | ||
| Spam Solver deliverability tool | ||
| Custom tracking links | ||
| Inbox rotation | ||
| API and Zapier access | ||
| Unlimited email accounts | ||
| Unlimited email warmup | ||
| Email verification | ||
| Master inbox | ||
| Campaign analytics | ||
| AI-powered features | ||
| Dedicated IP rotation (Light Speed+) |
Available
Partial/Limited
Not Available
Ecosystem
Native integrations.
GMass
GmailGoogle SheetsZapierGoogle Workspace
Instantly
HubSpotSalesforcePipedriveZapierMaken8nClaySlackGoogle Calendar
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Book a strategy callInformation gathered from official sources and may change. Pricing and features last verified 2/6/2026. Please visit the official websites for the most current information.