GMass: Powerful mail merge for Gmail
A powerful mass email and mail merge system for Gmail.
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
Straightforward and simple instructions. There are some additional features behind paywalls that I missed on the sign up. looks like having to pay more for additonal services. As it stands I sent 55 emails and got 2 responses becuase of the unique email and coming from gmail. (dealing with unsubscribe marketing emails) This works. thanks!
Honestly, it’s a very straightforward extension. I love the guide—it was super helpful. I also like the option to preselect templates and manually choose Google Sheets. It would be helpful to make it clear that the sheet must be attached to the email’s Google Drive, but overall, it was a great experience. I also loved the feature for tracking clicks and openings!
A Game-Changer for Mass Emailing in Gmail! GMass has completely streamlined our mass email efforts. It makes sending bulk emails straightforward and, most importantly, keeps them feeling personal. The mail merge feature is fantastic—it's super easy to insert custom fields like names, phone numbers, and any other data from my contact list. Highly recommend this tool!
GMass is easy to use. It doesn't escape spam filters problems, but that's probably not GMass' fault. Seems worth it if you send lots of mass emails regularly.
I've used this tool before, and it's by far the easiest mass mailing tool I've tried that still offers plenty of powerful features. I do hope the developers stay careful not to overload it with too many options as they continue improving it. The price is fair, and I appreciate that when I don’t have leads to send, I can pause my subscription easily. Unsubscribing and resubscribing only takes one click, and it’s great that all my data is kept intact when I return. That’s a really thoughtful service.
I have been using GMass for over 6 years and I cannot rave about it enough. A must for anyone in the PR/marketing field. It is easy to use and cuts the job time by so much. I think anyone in PR knows the auto-follow up feature is a god-send. Definitely worth it!
its very useful tool for bulk email
Super effective mail merge too that tackles my most important challenges of 1) having fallback variables 2) sending large merges at a healthy pace for my outbox and 3) suppressing bounced emails.
I can't say enough good things about GMass. It just works! I was kicking around idea about how I could automate emails with ChatGPT and it gave me several options. After trying several, including writing my own python scripts I've gone with GMass. The functionality, and reporting was exactly what I needed.
best emailing tool I'm using with my gmail...Love how easy it is to connect and start the campaigns.
Easy mass email tool
GMass is the best tool for sending lots of emails or single emails. Its user interface isn't great, and it takes time to learn how it works. Other than that, GMass is awesome. The support is fantastic, and I recommend it.
Good
this is just good, i love it.
Amazing tool to send cold emails for job hunting without spaming and keeping the personalisation in place.
GMass is the easiest mass email tool to use, especially for their price. I've sent over 10k emails so far and deliverability seems to be really solid. Perfect for anyone just getting started with cold email outreach.
GMass is a very effective and easy-to-use email marketing tool. It helps in sending bulk mails directly from Gmail, with tracking and scheduling features that save a lot of time. Great for outreach and follow-ups.
So far so good. It's UI is friendly, and a lot better than some other mass mailers that use google sheets. The other features are handy too. Definitely keen to make use of the auto follow-ups.
Great Application. Made sending email very easy and very helpful.
Can't recommend it enough. Saved me A LOT OF TIME. Yes! Time, the one thing that's finite, this simple to use tool saves just that! Highly recommended!
Nice product
Awesome, very easy to operate and at a very less price. Also it caries Gmail confidence.
good tool
GMass is a great tool! I love features like Auto Follow-Up and MultiSend from the Professional plan. The only thing missing is a way to check email spam scores before sending, which would make optimization even easier.
Very easy to use GMass tools. Looking forward to getting started.
Works for what I need it for
Such a great tool for getting information out to a large number of people in the quickest time possible!
Really enjoying using GMass, great inbox delivery
love this
I’ve been sending emails manually every day, and I’m glad I discovered GMass—it now automates all my marketing emails, and my delivery and response rates have already increased by 5%.
best service for the money
GMass has completely streamlined my email outreach. The seamless integration with Gmail is fantastic – I can send personalized mass emails and manage campaigns without ever leaving my inbox. The mail merge functionality with Google Sheets is incredibly powerful, allowing me to tailor messages at scale with ease. I particularly love the automatic follow-up sequences which have significantly boosted my response rates, and the real-time analytics provide valuable insights into campaign performance. GMass is user-friendly, efficient, and surprisingly affordable. It's an absolute must-have for anyone looking to supercharge their email marketing efforts directly within Gmail! Highly recommended!
By far the best mail merge tool I've found.
Great tool so far. Love the follow ups
GMass is super easy to use and perfect for cold email campaigns. It saves a lot of time, and deliverability has been excellent.
Great system would have loved if followup emails could directly reference the parameters used in the previous emails without needing the sheet.
Loving GMASS so far - it's really helping our deliverability rating and getting emails to inboxes and out of spam folders. Makes my job in sales much easier and simpler.
I loved the idea of GMass, because I dont want to learn yet another app. I am not a techie. But I found setting up the system to mass send confusing. There were too many items to deal with and each item has so much I need to learn. I accidentally sent out to a list because I clicked the wrong button.
Very premium services. Awesome app!
Very premium services with Discounted price
I subscribed GMASS for my Research Journal however even after taking paid subscription, I am not able to send the mass mails. It says you have reached the gmail limits of 500 emails. If I have to send only 500 mails as per gmail limit then what is the use of GMASS. My all the mails through GMASS are not sent.
GMass has been an invaluable tool for me as a marketer. It’s consistently been my go-to for generating demand and hosting events at scale. Truly worth the investment — I’d highly recommend it.
Iam really thankfull to GMass team for making our emails work really easy, its one of the best tools to send mass email.
Awesome app! Super helpful and easy to use.
I use it mainly for scheduling emails and setting up auto follow-ups and it does both perfectly, right inside Gmail with zero learning curve. Scheduling is super simple, and the follow-up feature saves me tons of time. My only gripe is the small follow-up editor box, but that’s easy to work around. Overall GMass makes email outreach smooth and effortless for me. Highly recommend!
GMASS is an excellent tool for anyone working directly out of Gmail. As a daily Gmail user, I found it incredibly convenient for sending bulk emails while still adding personalization to each message. It makes outreach feel natural and realistic. Highly recommend it!
Feature rich, robust and affordable. Thank you GMASS.
Perfect add-on for gmail and cold emailing
Perfect add-on for gmail and cold emailing
Really great. Only missing thing is that I can't add a followup to an existing campaign once created!
