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What is GMass?

GMass is a Chrome extension that transforms Gmail into a powerful email marketing and cold email platform. Built by a team focused on simplicity and deliverability, it solves the problem of sending personalized mass emails directly from Gmail without needing a separate email service. Core capabilities include mail merge with Google Sheets, automated follow-up sequences, email list building from Gmail search, and advanced deliverability features like spam trigger checks and link testing. It also breaks Gmail's sending limits using distribution technology, allowing users to send virtually unlimited emails. The tool is ideal for marketers, sales professionals, startups, and anyone who needs to send bulk personalized emails from their Gmail account. It fits workflows for email campaigns, newsletters, cold outreach, and automated follow-ups, all within the familiar Gmail interface.

AI Tool Review Summary

Performance Score

4.6/5

Content/Output Quality

High, consistent, and on-brand

Interface

Clean and minimal, integrated into Gmail

AI Technology
LLM
Purpose of Tool

To enable personalized mass email campaigns and cold email sequences directly from Gmail.

Compatibility

Chrome browser extension, integrates with Gmail and Google Sheets.

Pricing

Freemium with paid tiers

Features

Features with the highest value for users are highlighted here.

Mass email sending in Gmail

Mail merge with Google Sheets

Automated follow-up sequences

Email reporting and analytics

Personalization with fallback values

Schedule and repeat campaigns

Behavior-based segmentation

Reply and bounce management

How It Works

1

Install the extension

Add GMass to Chrome from the Chrome Web Store.

2

Compose your email

In Gmail, click Compose and write your message as usual.

3

Set up mail merge

Connect a Google Sheet to personalize fields like name or company.

4

Send and track

Click the GMass button to send, then view open, click, and reply stats in Gmail.

Who Is It For?

Marketing teams

Sales professionals

Startups

Freelancers

Small business owners

Recruiters

Nonprofits

Educators

Event organizers

Customer support teams

Pricing

Free

$0/monthly
  • Up to 50 emails/day
  • Basic mail merge
  • Email reporting
Popular

Pro

$19/monthly
  • Up to 1,000 emails/day
  • Automated follow-ups
  • Advanced personalization

Enterprise

$79/monthly
  • Up to 10,000 emails/day
  • Priority support
  • Custom integrations

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Pros & Cons

Pros

  • Seamlessly integrates with Gmail, making setup quick and intuitive.
  • Powerful personalization and automation features boost campaign effectiveness.

Cons

  • Requires Chrome browser, limiting cross-platform use.
  • Advanced features may have a learning curve for non-technical users.

FAQs

Just Launched

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Reviews

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Rating

5.0

Pros

Cons

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Analytics of Gmail Mail Merge: The Complete Guide (Best Ways, 10 Pro Strategies, Quick Start)

Website traffic and keyword analysis.

Live dataFeb 2026 – Apr 2026

Monthly visits

698.05K

+7.1% vs prior month

Avg. visit duration

00:01:47

M 4 2026 snapshot

Pages / visit

2.13

M 4 2026 snapshot

Bounce rate

63.29%

Lower is better

All traffic · Worldwide

Weekly estimate · Feb 1, 2026 – Apr 29, 2026

114.57K120.83K127.09K133.35K139.61KFeb 1Feb 15Mar 1Mar 15Mar 29Apr 8Apr 22Apr 29

Peak week: 139.61K (Apr 1, 2026)Low week: 114.57K (Feb 1, 2026)WoW: 0.0%Derived from monthly estimates · SimilarWeb-equivalent

Release History

0 releases published

No releases yet.

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