GMass for Gmail™ - Google Workspace Marketplace

A powerful mail merge and mass email system for Gmail™.

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Listing updated:September 4, 2023

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Overview

A powerful mass email and mail merge system for Gmail™.

Simple and powerful email marketing inside Gmail™.

*Send email marketing campaigns to thousands of email addresses.

*Mail merge with data from Google Sheets™.

*Personalize mass emails based on name, email address, and any available columns in Google Sheets™.

*Schedule mass emails to be sent later.

*Track opens and clicks.

*Send follow-up emails to people that opened, clicked, or replied to a previous campaign, or to those that did NOT open, click, or reply.

*See all reports right in your Gmail account, under the "GMass Reports" Label.

*Create instant recipient lists based on search results.

*Send unlimited emails from your Gmail™ account by connecting your GMass account to an external SMTP service like Sendgrid.

*And the killer feature - emails can be sent as replies to the last conversation you had with each recipient.

Note that the GMass Add-on must be paired with the GMass Chrome extension for full functionality. The Add-on allows you to see statistics on sent emails and add people to your "Unsubscribes" list, but the Chrome extension is needed to launch email campaigns: https://chrome.google.com/webstore/detail/gmass-powerful-mail-merge/ehomdgjhgmbidokdgicgmdiedadncbgf

We're always improving GMass. Stay updated with GMass on the web and social media.

Website: http://www.gmass.co
Blog: http://www.gmass.co/blog
Twitter: http://twitter.com/GMassForGmail

The website at www.gmass.co has screenshots and explanations of all features. You won't find a better mass email and mail merge tool for Gmail™ than GMass!

Any questions? Email our support team at support@gmass.zendesk.com or search our blog for answers!

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PricingFree of charge with paid features

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Rachel Donovan

August 17, 2026

We’ve had a great experience with GMass. It’s user-friendly, quick to set up, and makes managing email campaigns through Gmail simple and efficient. The platform is reliable, saves us a lot of time, and works very well for our outreach needs. We highly recommend GMass to anyone looking for an effective and easy-to-use email marketing solution.

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Alicon Publications

August 22, 2026

I've been using GMass for email outreach, and overall, it has been a very useful tool. The Gmail integration makes it easy to manage email campaigns, personalize messages, and track campaign performance without needing a complicated setup. I especially like the convenience of sending campaigns directly from Gmail while still having useful automation and tracking features. It's a great option for anyone who regularly needs to send professional email campaigns and manage a large contact list. Overall, a reliable and user-friendly email marketing tool.

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Gabrielle Marie Dayan Moquiala

August 25, 2026

I’ve only recently started using GMass, and the Gmail add-on has already made things much easier for me. I’m not a tech-savvy person, so I really appreciate having useful information available directly within Gmail instead of having to figure everything out on my own. I’m currently using GMass as part of my very first job where I’m trying to generate commissions, so I’m still learning the ropes. The integration with Gmail makes the whole process feel much more manageable and organized. I also want to give a special shout-out to Ajay. He has been incredibly helpful and responsive, especially considering that I’m new to GMass and still figuring out how everything works. Having someone who is willing to help a beginner has made my experience much less overwhelming. So far, I’m very happy with GMass and the Gmail add-on, and I’m looking forward to learning more and getting better results as I continue using it.

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Yes

Karan Sen

August 20, 2026

I recently started using GMass for email outreach directly from Gmail. Setup was straightforward, and I like that I can manage campaigns without moving to a completely separate email platform. For someone already working heavily inside Gmail, it makes the workflow much easier. I’m still exploring the advanced features, but my initial experience has been smooth and practical.

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Yes

Emily Carter

August 25, 2026

I’ve been using GMass for my email outreach, and I find it quite convenient for my day-to-day campaigns. Since it works directly with Gmail, I can manage my outreach, personalize emails and keep track of responses without having to work across multiple platforms. What I like most is that it keeps the process simple and practical — I can send personalized campaigns at scale while still being able to monitor how the outreach is performing.The prefect Campaign tool i recommend to all email campaign specialist. very effective and quick reports.

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Yes

Mohd Naved

July 31, 2026

I've had a great experience with Gmass. It's very easy to use, and it makes sending bulk emails quick and hassle-free. The interface is simple, campaigns are easy to set up, and it has saved me a lot of time with email outreach. Highly recommended for anyone who needs to send personalized bulk emails efficiently.

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Yes

Kaushik Manek

July 18, 2026

⭐⭐⭐⭐⭐ GMass has made email outreach incredibly easy and efficient. The integration with Gmail is seamless, and the features like personalized mail merge, automated follow-ups, scheduling, and email tracking work flawlessly. It's intuitive to use, saves a significant amount of time, and has helped improve the effectiveness of my email campaigns. The support team is also responsive and helpful whenever assistance is needed. I highly recommend GMass to anyone looking for a powerful yet user-friendly email marketing solution.

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Kelly McCready

June 5, 2026

I have used this for crowdfunding campaigns twice now, and I absolutely love it. I find it intuitive. It makes me 100 times more effective than if I were to send things out on my own. It also minimizes errors because you don't make typos when you're sending a ton of emails with templates. Do it!

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Yes

IJEBSSR Journal

June 28, 2026

GMass has completely transformed the way we manage our email campaigns. It is easy to use, reliable, and packed with powerful features such as mail merge, scheduling, and email tracking. As an academic journal, we regularly communicate with authors, reviewers, and researchers, and GMass has made this process much more efficient. It saves us valuable time while ensuring our emails are delivered professionally. The Gmail integration is seamless, and the overall experience has been excellent. We highly recommend GMass to anyone looking for a dependable and effective email marketing solution.

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Yes

Mazhar Imam

June 21, 2026

I started using GMass while navigating a job change across the APAC and UAE markets. The volume of outreach required was immense, and GMass made it completely manageable directly within Gmail. I was able to send personalized emails at scale, track my engagement, and manage follow-ups efficiently. The automation features are fantastic—they directly contributed to me getting more interview calls. If you're looking to streamline your communication, this is a must-have.

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