Tool comparison · Head to head
GMass vs Mailshake
A factual comparison of features, pricing, and capabilities.
Updated 2/6/2026
The contenders
Line by line
Pricing comparison.
Monthly rates shown. Annual billing may offer discounts. Visit official sites for current pricing.
Capabilities
Feature comparison.
| Feature | GMass | Mailshake |
|---|---|---|
| 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 warmup | ||
| Unlimited campaigns | ||
| Mail merge | ||
| AI email writing | ||
| Email rotation | ||
| Unified inbox | ||
| LinkedIn automation (Sales Engagement+) | ||
| VOIP dialer (US/Canada unlimited) | ||
| Lead Catcher |
Available
Partial/Limited
Not Available
Ecosystem
Native integrations.
GMass
GmailGoogle SheetsZapierGoogle Workspace
Mailshake
SalesforcePipedriveHubSpotZapier
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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.