GMass: Powerful mail merge for Gmail

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Description from extension meta

A powerful mass email and mail merge system for Gmail.

Image from store GMass: Powerful mail merge for Gmail

Description from store The easiest way to transform Gmail into a cold outreach, email marketing, and mail merge platform. ** Join the almost 400,000 others who’ve given us an average of 4.8 out of 5 stars ** No credit card required + send 50 emails per day free during your free trial! ----------------------------------------- Key features ----------------------------------------- * Send cold email and email marketing messages to thousands of addresses * Unlimited contacts, campaigns, AND emails * Mail merge personalization with data from Google Sheets * Personalize each mass email (even send personalized images and attachments) * With GMass MultiSend's inbox rotation feature, you can distribute your campaign across multiple accounts! * Hit the inbox, not the spam folder. 99% of GMass users report the best deliverability they’ve ever had. * Spam Solver - test messages before you send to find spam rates, then use suggested tweaks to improve * Send auto follow-ups based on opens, clicks, and replies. NEW - Send any stage of follow-ups on demand. * ChatGPT campaign creation — generate an entire email campaign, follow-ups, and GMass settings by typing in a prompt * Automatically skip sending emails and automations on holidays, and choose custom days of the week to send/not send a campaign * Send triggered emails that go out automatically when a recipient opens or clicks — reach your prospects when you know they're in their inbox * Automate your outreach by automatically sending to new contacts in your Sheet using GMass's recurring campaigns * Connect your CRM or other apps using the GMass API or Zapier * Track opens, clicks, and replies — with instant reply and bounce detection. No more delays; see replies and bounces in your report in a matter of seconds. * Free email verification — verify email addresses before you send your campaigns * Set DKIM through GMass for authenticated sending with a SMTP server. * Help with the new Google/Yahoo bulk sender requirements is here - https://www.gmass.co/blog/gmail-bulk-sender-guidelines/. We've also created a one-of-a-kind system to help users with free Gmail addresses sending campaigns via a SMTP server pass DMARC - https://www.gmass.co/blog/gmail-smtp-dmarc/ * Emails can be sent as replies to the last conversation you had with each recipient * Unsubscribe and bounce management to automatically process unsubs/bounces, suppress future messages to those addresses, and more. * Hundreds of other features: Schedule emails, throttle sending speed, custom tracking links with SSL, A/B testing, spintax for varying up your copy, quick email polls with custom landing pages, add a countdown timer to emails, drip campaigns, HTML editing, use Gmail's built-in layouts for email marketing, 1-click replies, reusable templates, one-click social media sharing of campaign results, and so much more ----------------------------------------- Keep up with GMass ----------------------------------------- Website: https://www.gmass.co What makes GMass different/better? https://www.gmass.co/blog/what-makes-gmass-better/ Quickstart guide: https://www.gmass.co/quickstart-guide Blog: https://www.gmass.co/blog Twitter: https://twitter.com/GMassForGmail and https://twitter.com/PartTimeSnob YouTube: https://www.youtube.com/gmass/ Support: https://gmass.co/g/support Latest updates: https://www.gmass.co/updates ----------------------------------------- How does GMass compare to other Gmail extensions? ----------------------------------------- Mixmax: cool extension, but you have to use its external web portal to send campaigns. With GMass, the magic happens inside Gmail, using just the red GMass button. Yesware: similar to Mixmax, you can't send campaigns inside Gmail. You have to use their web interface. Plus, both Mixmax and Yesware are more expensive than GMass. Mailtrack and Snov.io: Lets you track individual emails, but with GMass, you can eliminate Mailtrack and Snov.io because GMass can track both individual emails and campaign emails. Use the GMass button on both one-on-one emails and campaigns. Copper: Good CRM system, but not meant for sending email campaigns. Same for Gmelius and Streak CRM. Lastly, GMass works seamlessly with Grammarly to ensure your campaigns contain perfect prose and are error-free.

Latest reviews

(2025-08-23) Harry Watson: hassle free mailing system for bulk mails, prevents from spam and accurate in work.
(2025-08-23) Hansel Joshi: I have been using GMass for a month or so. I first started with the free trial and since I liked it for its ease of use and implementation, I decided to go forward with the subscription for a month as I have to send mass e-mails for my applications. Overall, my experience with this tool has been good and there was only one time when I had mistakenly sent mass e-mails without adding the last name of the recipients. If GMass had a feature where it could spot such minor errors and prompt the user accordingly, I believe it could make for an even better tool. All in all, it has to be the best in the market for sending mass e-mails.
(2025-08-22) CashGotHeat: Great I like it so far really easy to use
(2025-08-22) Nathan Thomas: Just a couple days in and this service is amazing. Does exactly what I needed and very easy to use.
(2025-08-22) Meri Beckwith: Have used it a couple of times, pretty easy to set up and use, would recommend
(2025-08-22) Ha Anh Luu: pretty chill, easy to use and pretty cheap tbh
(2025-08-22) Ewan Waddell: Works very well
(2025-08-21) Raymond Prosek: Great app! Saves so much time and the follow up is great!
(2025-08-20) Jayden Walsh: Great so far! Started my first campaign in under 10 minutes, saving me hours of manual work
(2025-08-20) Bjørn Haugaard Frandsen: Super helpful! But difficult to switch accounts after you have unsubscribed
(2025-08-20) Molly Spain: Super helpful!
(2025-08-20) Selarinya: a tool that makes it very easy to send large numbers of emails
(2025-08-20) Camden Bean: I've used Gmass on all the different companies I've built. Great product and easy to use.
(2025-08-19) Amogh Bahuguna: It is excellent!
(2025-08-19) prodhermess: the best service by far
(2025-08-19) Daniel Park: Fantastic tool that saves so much time!
(2025-08-19) Ravi Bhatia: Easy to set up and use within Gmail. Love it.
(2025-08-18) Artspace Tattoo Studio: Great and simple to use. Still exploring all options
(2025-08-18) Kumarjit Ghosh: I’ve tried other platforms before, but honestly, none of them come close to the range of features GMass offers. It’s more powerful, more intuitive, and far more convenient than anything else out there. I strongly suggest going for GMass.
(2025-08-18) Editor IJAER: "A Game‑Changer for Gmail Outreach!" I absolutely love using GMass—it transformed the way I handle email campaigns right from my Gmail inbox. Setup was a breeze, and the familiar Gmail interface made everything feel intuitive. With just a few clicks, I could pull contact data from Google Sheets, personalize each message, schedule follow‑ups, and even test for deliverability. And tracking results—opens, clicks, replies—right inside Gmail made campaign insights effortless. It’s efficient, smart, and a huge time‑saver. Highly recommend for anyone wanting powerful email tools without leaving Gmail!
(2025-08-17) Andrew Falso: Fantastic tool for email marketing. Reliable, accurate and easy to use.
(2025-08-16) Vertumnia srl: GMass is an excellent tool for email campaigns. It’s simple to use, integrates directly with Gmail, and saves a lot of time when sending mass emails or follow-ups. The automation features are very powerful, and the pricing is affordable compared to other solutions. Highly recommended for anyone managing outreach or marketing.
(2025-08-16) Harshad Latey: I am using Gmass, since 2 years has very friendly features to use.
(2025-08-15) Anas Khan: GMass has been a game-changer for my email outreach. Its user-friendly interface, powerful mail merge features, and reliable deliverability have made managing campaigns effortless. I especially appreciate the detailed analytics and easy Gmail integration. Highly recommended for anyone looking to streamline and scale their email marketing!
(2025-08-14) Kyle Kaplanis: This worked way better than I anticipated!! It was such a simple process from start to finish, and I love how the overlay in the gmail suite worked to walk you step by step. I sent out my first batch of 500 emails and already seeing major progress! This is a must have to scale your business.
(2025-08-14) Anish Kulkarni: Great product, easy to use and all features work as intended. No issues.
(2025-08-14) Usama Rasheed: GMass has completely transformed the way I handle email outreach. The setup is incredibly simple, and the ability to send personalized bulk emails directly from Gmail is a huge time-saver. I love how I can easily create automated follow-ups, track opens and clicks, and manage campaigns without needing any complicated external tools.
(2025-08-14) AVTAR TRAVELS EST 1972: Its a Great Tool, I been using it, Features are great and easy to use, Gmail itself is best know.... not to mention i am very confident using it and happy to continues ....thanks
(2025-08-14) Subhadeep Ghosh: It's a great tool for email marketing. Though it needs some improvements like if I attach picture in the body then while sending it delivers as a broken image. Also my draft and sent box becomes heavy if I send mass emails and put follow up, making it difficult for me to naviagte other important emails.
(2025-08-14) Nexaa VRA: a fast , reliable, and easy to use mail merge app. Makes sending personalized and bulk mails effortless, with smooth integration and minimal setup..
(2025-08-14) Jorg De Luna: Just started using the free trial about two days ago, and today I bought the standard membership. It is super useful, and freed up my time SOOOOOOOOO quickly. I already spend a lot of time gathering emails to send to in the first place, and then I would have to send out the emails 1 by 1. Eliminated an hour of sending out emails. INSTANTLY. And, remember, TIME IS MONEY.
(2025-08-14) Sidhartha Barua: Very useful
(2025-08-13) Vivek Chand: I needed a simple way to automate email sending & GMass did an awesome job in doing just that, nice work on keeping it simple!
(2025-08-13) Brian Petrone: simple and easy to use great results and makes sending bulk email fast and easy
(2025-08-13) Angela DiNatale: I recently started using gMASS for my email marketing campaigns, and I couldn't be happier with the results! The integration with Google Sheets makes it incredibly easy to manage my contacts and personalize my emails. The user interface is intuitive, and I love how I can track opens and clicks in real-time. The mail merge feature is a game-changer, allowing me to send personalized emails at scale without any hassle. I also appreciate the ability to schedule emails, which helps me reach my audience at the right time. Customer support has been fantastic, always ready to assist with any questions I have. Overall, gMASS has streamlined my email marketing efforts and significantly improved my outreach. Highly recommend it to anyone looking to enhance their email campaigns
(2025-08-13) Aspire Exports: good email sending services
(2025-08-13) Alainaa Skaggs: Thank you GMass! I was looking for a way to send out mass emails efficiently and GMass most certainly delivered!
(2025-08-13) Jay Greener: Five out of five so far. I just downloaded it and sent my first batch of emails. I'm not experienced enough to say if it's great or not, but I will say that the learning curve is very simple. If you watch the tutorial or let it walk you through the process, you'll be up and running in no time. So far, so good. I highly recommend it at this point.
(2025-08-13) Paul Adrian L. Allarey: GMass is a solid tool for sending and managing email campaigns directly from Gmail. It’s easy to use, saves a lot of time, and has helpful features like mail merge and scheduling. Highly recommended for anyone who needs to send bulk emails efficiently.
(2025-08-13) Ahndy: Really good
(2025-08-13) Maama Jane Spiritual Healer In Africa: Works great and allows me to see how many people I am actually reaching with my emails.
(2025-08-13) Rebecca Menzia: Works great and allows me to see how many people I am actually reaching with my emails.
(2025-08-12) Ben Ki Yeung KIM: GMass has been a game-changer for my email outreach and marketing campaigns. The platform is incredibly easy to integrate with Gmail, making it simple to send personalized mass emails without losing that one-to-one feel. I especially appreciate the powerful automation features, like auto follow-ups and mail merge, which save me hours every week. The analytics are clear and actionable, allowing me to track opens, clicks, and replies in real time. GMass also handles deliverability exceptionally well—I’ve noticed a significant increase in my email engagement rates since switching to it. Overall, GMass is an efficient, user-friendly, and reliable tool for anyone serious about email outreach. I would highly recommend it to small businesses, marketers, and sales teams who want to maximize productivity and results.
(2025-08-12) Oluwafikayo Oyewale: I like the smooth personalization. I also like the fact that the open reports are separated from my inbox.
(2025-08-10) Erika Rodriguez: I've been using GMass for a month and it's great for my business. I love the dashboard view that shows me all the metrics to the mass emails I'm sending.
(2025-08-09) InternationalPreschool Tamagawa: We could send the message to customer's email box as a personal message. It is assuring that customers can read our message.
(2025-08-08) Adam Miller: This program worked well for me!
(2025-08-07) Israr Ahmed: I love this tool! It's easy to use, very affordable, and perfect for sending bulk emails. One of my favorite features is the inbox rotation, which helps me send a large number of emails at once without getting blocked by Gmail. GMass has made email outreach so much smoother and more effective for me. Thanks, GMass!
(2025-08-06) Eoin Hendry: Intuitive and well designed program, it's a nice solution for casual email senders. Saves a tone of time without requiring heavy software subscriptions from competitors.
(2025-08-06) Robbie Egan: My favourite email marketing tool. Powerful and simple.

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