TL;DR - GMass
- GMass transforms Gmail into a powerful email marketing and cold email platform.
- It enables mass email sending, advanced personalization via Google Sheets, and automated follow-up sequences.
- The tool offers robust analytics, list building from existing Gmail contacts, and behavior-based campaign segmentation.
Pricing: Free plan available
Best for: Growing teams
4.8/5 across review platforms
What is GMass?
GMass is an email marketing and mail merge tool that works directly inside Gmail. It lets you send mass emails, automated follow-ups, and track results without leaving your Gmail inbox.
Available on: Chrome
Pros & Cons
Pros
- Integrates directly into Gmail's compose window for ease of use.
- Bypasses Gmail's native sending limits for mass email campaigns.
- Offers advanced mail merge personalization using Google Sheets, including fallback values.
- Automates follow-up sequences until a recipient replies, enhancing response rates.
- Provides detailed email reporting and analytics accessible from desktop and mobile Gmail apps.
Cons
- Requires the Google Chrome browser to function.
- Relies on Gmail's infrastructure, which might not be suitable for all enterprise-level email marketing needs.
- The email list builder is limited to contacts found within the user's Gmail account.
Ratings Across the Web
4.8(2,628 reviews)
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
Gmail integrationMail mergeAuto follow-upsCampaign analyticsSchedulingA/B testing
Pricing Plans
Pricing checked Aug 1, 2026
Free
Free
- 50 emails/day
- Basic features
- GMass footer
Standard
$25/monthly
- Unlimited emails
- No footer
- Follow-ups
Premium
$35/monthly
- A/B testing
- API
- High priority
Reviews
4.8/5
Across 2,628 verified user reviews on capterra, g2
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GMass FAQ
How does GMass enable sending mass emails beyond Gmail's standard limits?
GMass utilizes its proprietary distribution technology to bypass Gmail's inherent sending restrictions. This allows users to send a virtually unlimited number of emails for their campaigns directly from their Gmail account.
Can GMass personalize emails using data from Google Sheets, and does it support dynamic updates?
Yes, GMass integrates directly with Google Sheets for mail merge personalization, allowing users to leverage any column for custom fields. It can also monitor the Google Sheet for new rows and automatically send emails based on those additions.
What kind of reporting and analytics does GMass provide for email campaigns?
GMass offers campaign-level reports that detail key metrics such as opens, clicks, replies, and bounces. These analytics are accessible directly within Gmail, both on desktop and through the Gmail mobile app.
How does GMass assist in building email lists from existing Gmail contacts?
GMass allows users to build email lists by searching their Gmail account for messages containing target recipients. After a search, a 'Build Email List' button populates a Compose window with the extracted email addresses.
Does GMass offer functionality for automated follow-up sequences in cold email campaigns?
Yes, GMass enables users to set up automatic follow-up emails that send in a sequence. These follow-ups continue until the recipient replies, which helps to significantly boost response rates for cold email campaigns.
Can GMass create behavior-based campaigns based on previous email interactions?
GMass supports behavior-based campaigns, allowing users to segment and send emails to specific groups from prior campaigns. For example, you can target recipients who opened a previous campaign or those who did not click a specific link.
Source: gmass.co