GMass vs Instantly

A factual comparison of features, pricing, and capabilities

Last updated: 2/6/2026

GMass

Gmail-based mass email and mail merge platform with unlimited emails, campaigns, and contacts directly inside Gmail.

Starting at: $30/month

Instantly

Cold email platform with unlimited email accounts, unlimited warmup, and a 450M+ B2B lead database.

Starting at: $37/month

Pricing Comparison

Prices shown are monthly rates. Annual billing may offer discounts. Visit official websites for current pricing.

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

Integrations

GMass

GmailGoogle SheetsZapierGoogle Workspace

Instantly

HubSpotSalesforcePipedriveZapierMaken8nClaySlackGoogle Calendar

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Information on this page is gathered from official sources and may change. Pricing and features were last verified on 2/6/2026. Please visit the official websites for the most current information.