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GMass

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What GMass is

GMass sends newsletters, announcements, cold outreach, and transactional email from Gmail, using an extension or the web app. Campaigns can personalize messages with mail merge fields and conditional logic, including recipient rows and merge fields drawn from Google Sheets. Tools include scheduling, analytics, automated follow-ups, A/B testing, and unsubscribe and bounce management. GMass lists connections through a REST API, webhooks, Zapier, Google Sheets API, and SMTP relay. It says messages can be sent through Gmail, inbox rotation, or SMTP as audience size grows. GMass is paid, has no free plan, and offers a free trial. Standard is $20 a year (billed $249 paid annually); Premium is $29 a year (billed $349 paid annually); Professional is $49 a year (billed $599 paid annually). GMass says it stores recipients’ email addresses for campaign features, but not campaign subjects or message content. It may share list information with service providers, including advertising platforms, for targeted advertising. Its all-at-once settings interface may not suit people who prefer a step-by-step wizard.

Who it suits

GMass suits teams and groups sending newsletters, sales or cold outreach, internal communications, or transactional email from Gmail. Its personalization, follow-ups, and Sheets support can help manage targeted campaigns.

What it does well

  • Personalizes campaigns with mail merge and conditional logic
  • Uses Google Sheets rows and columns for campaign data
  • Includes analytics, scheduling, follow-ups, and A/B testing
  • Offers API, webhooks, Zapier, and SMTP relay connections

What to know first

  • No free plan, though a free trial is available
  • The settings interface may overwhelm wizard-preferring users
  • Stores recipient email addresses and may share list information for targeted advertising

Plans

PlanBilled and limitsPrice
Standard$249 paid annually · Unlimited emails · Unlimited contacts · Unlimited campaigns · Mail merge personalization · Email support$20 a year
StandardBilled monthly · Unlimited emails · Unlimited contacts · Unlimited campaigns · Mail merge personalization · Email support$29.95 a month
Premium$349 paid annually · Unlimited emails · Unlimited contacts · Unlimited campaigns · Sequences and follow-ups · API access (+Zapier) · A/B testing · Triggered Emails$349 a year
PremiumBilled monthly · Unlimited emails · Unlimited contacts · Unlimited campaigns · Sequences and follow-ups · API access (+Zapier) · A/B testing · Triggered Emails$39.95 a month
Professional$599 paid annually · Unlimited emails · Unlimited contacts · Unlimited campaigns · Sequences and follow-ups · API access (+Zapier) · A/B testing · Triggered Emails · Inbox Rotation (MultiSend) · High-priority support$599 a year
ProfessionalBilled monthly · Unlimited emails · Unlimited contacts · Unlimited campaigns · Sequences and follow-ups · API access (+Zapier) · A/B testing · Triggered Emails · Inbox Rotation (MultiSend) · High-priority support$59.95 a month

As gmass.co lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

  1. Visit the GMass website.
  2. Use GMass through its extension or the web.
  3. Start with the free trial.
  4. Choose Standard, Premium, or Professional if selecting a paid plan.

Verdict

GMass brings campaign sending and management into Gmail, with options for personalization, follow-ups, and integrations. Consider its pricing, email-list data practices, and settings interface before choosing it.

Questions

Does GMass have a free plan?

No. GMass is paid and offers a free trial.

What are GMass's listed prices?

Standard is $20 a year (billed $249 paid annually). Premium is $29 a year (billed $349 paid annually), and Professional is $49 a year (billed $599 paid annually).

Which platforms does GMass support?

GMass is available as an extension and on the web, and it works from inside Gmail.

What integrations does GMass list?

GMass lists a REST API, webhooks, Zapier, Google Sheets API, and SMTP relay.

What email information does GMass store or share?

GMass says it stores recipient email addresses for campaign features, but not campaign subjects or message content. It may share email-list information with service providers, including advertising platforms, for targeted advertising.

Who founded GMass?

GMass's About page identifies Ajay Goel as its founder and lists Dayton, Ohio in his profile.

Facts from GMass's own pages

Best fit
GMass describes uses including cold outreach, sales, newsletters, internal communications, clubs, nonprofits, schools, and other groups. · gmass.co, 8 Oct 2026
Campaign tools
Features include campaign analytics, scheduling, automatic follow-ups, A/B testing, and unsubscribe and bounce management. · gmass.co, 8 Oct 2026
Company
The About page identifies Ajay Goel as GMass's founder and lists Dayton, Ohio in his profile. · gmass.co, 8 Oct 2026
Data sharing
GMass says it may share email-list information with service providers, including advertising platforms, for targeted advertising, and does not sell or trade that information for other purposes. · gmass.co, 8 Oct 2026
Delivery
GMass says it can route sends through Gmail, inbox rotation, or SMTP as audience size grows. · gmass.co, 8 Oct 2026
Google Sheets
GMass can use Google Sheets rows as recipients and columns as merge fields. · gmass.co, 8 Oct 2026
Integrations
GMass lists a REST API, webhooks, Zapier, Google Sheets API, and SMTP relay as ways to connect with other apps and services. · gmass.co, 8 Oct 2026
Notable limitation
GMass says its all-at-once settings interface may feel like too much for people who prefer a step-by-step wizard. · gmass.co, 8 Oct 2026
Personalization
It supports mail merge personalization and conditional logic for campaigns. · gmass.co, 8 Oct 2026
Product
GMass sends newsletters, announcements, cold email campaigns, and transactional email from inside Gmail. · gmass.co, 8 Oct 2026
Security and privacy
GMass says it stores recipient email addresses for campaign features, does not store campaign subject or message content, and secures the email-address database with two layers of firewalls. · gmass.co, 8 Oct 2026
Support
GMass directs customers to read support guidelines and submit a support form to contact its support team. · gmass.co, 8 Oct 2026

Where GMass stands on Freedom251

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