GMass Reviews & Product Details

I love how easy and fast GMass is to set up. I was able to get my first personalized outreach campaign running within minutes. The customization options are great, and it integrates smoothly with Gmail so there is nothing new to learn and everything just works. It has already saved me a lot of time and has become one of the most efficient tools in my workflow. Review collected by and hosted on G2.com.

There is not much I dislike so far. The interface can feel a little dense at first because there are many features, but once you understand where everything is, it becomes much easier to use. A bit more built-in guidance for new users would be helpful, but it has not slowed me down. Review collected by and hosted on G2.com.

GMass is extremely convenient because it works directly inside Gmail, so there’s no need to learn a separate platform. I really like how easy it is to send bulk emails, personalize them with mail merge, and track opens and clicks. The scheduling and auto follow-up features save a lot of time and make outreach more effective. It’s user-friendly and reliable, which makes it a great choice for managing campaigns and client communication. Review collected by and hosted on G2.com.

Sometimes the Gmail sending limits can be restrictive when you want to send very large campaigns. Also, the setup for advanced features may feel a little technical for new users. However, once you get used to it, the tool works very well. Review collected by and hosted on G2.com.

I really appreciate GMass for enhancing the effectiveness of my email marketing campaigns through its impressive features. The multi-send capability is exceptional, allowing me to efficiently manage large outreach efforts by personalizing each email. This, combined with the spin text feature, enables me to vary content automatically, increasing engagement and making each message feel unique. The auto follow-up function is a game-changer as it automatically manages responses and keeps prospects engaged without manual intervention, leading to higher open rates and conversion rates. The triggers feature is particularly beneficial, automating responses based on user actions, which increases responsiveness and ensures timely communication. Overall, these features contribute to a more streamlined workflow, resulting in more client conversions and significantly more replies from my campaigns. Review collected by and hosted on G2.com.

Sometimes my campaign pauses, and I don't know why. Review collected by and hosted on G2.com.

I love GMass for its ease of use and simplicity, and the fact that it just works seamlessly. The software's ability to send mass emails efficiently is particularly valuable for my needs, such as informing all of my contacts about my new email. I am impressed with how well sending emails from a list works, and I think the email tracking feature is solid and reliable. Integration with Gmail adds to the convenience, and the switch from Mailchimp to GMass was motivated by its authenticity and the advantage of operating directly within Gmail. Overall, the initial setup was fairly easy, and I would rate it a 7 out of 10 in terms of ease. The overall positive experience and reliability of GMass make it something I would highly recommend to others, scoring it a perfect 10 for recommendation. Review collected by and hosted on G2.com.

I find the onboarding process for GMass not entirely helpful, especially when it comes to acquiring emails for all my contacts. There is a noticeable gap in providing clear guidance on how to create email lists, which would greatly enhance the overall user experience. Review collected by and hosted on G2.com.

I find GMass incredibly valuable for reaching out to multiple potential partners simultaneously, significantly enhancing my efficiency in communication. I am particularly impressed with the personalization capabilities that GMass offers, which I feel are often lacking in other mass email services. The feature enables me to maintain a personal touch in every email, crucial for maintaining strong relationships. Additionally, the analytics tools provided by GMass are outstanding—they allow me to track the number of clicks and opens on my emails and even identify the times at which they were accessed. This functionality helps me plan my future communication strategies more effectively. Furthermore, I appreciate the ease of use that GMass offers. It’s user-friendly, and even after my first use, I found it straightforward to navigate through its features. Review collected by and hosted on G2.com.

I found the test email setup in GMass to be lacking. It didn't work as well as I would have liked because I couldn't see exactly what the recipient would receive. Additionally, although the initial setup process was okay, I wish it had been a bit more simplified. Despite this, looking back, it did accomplish what I hoped, so it's ultimately fine. Review collected by and hosted on G2.com.

Super Easy to Set Up

Works Directly Inside Gmail

Personalization at Scale

Powerful Email Scheduling

Google Sheets Integration

High Deliverability

Affordable and Scalable Review collected by and hosted on G2.com.

One thing I noticed, and it’s worth mentioning for future users: if you schedule a campaign and later decide to make edits or stop it midway, GMass won’t apply those changes immediately. Instead, it finishes sending the current batch of 50 emails before applying the updates. For example, if 723 emails have already been sent and you edit the draft, the changes will take effect only after the 750th email is sent.

This isn’t a major issue, especially when sending thousands of emails — it’s just good to know in case you’re planning last-minute changes. As long as the campaign is actively sending, edits won’t stop it right away. But if it’s not currently firing, your changes will take effect without delay. Review collected by and hosted on G2.com.

I appreciate GMass for its affordability, utility, and reliability, making it an ideal choice for my public relations tasks. One of the standout features I enjoy is how GMass sorts emails into different folders, such as clicked, opened, and bounced, providing accessible insights into the effectiveness of my pitches. This sorting capability supports efficient email campaign management and helps me understand what resonates with my audience. Additionally, the setup process of GMass was remarkably easy. I appreciate how the system guided me through each step thoroughly. Another aspect I value is GMass's ability to send a large volume of emails in a short period, which is crucial for tasks like pitching journalists in bulk and distributing press releases. I can also quickly track who clicks on and opens my emails. These features streamline my workflow considerably, allowing me to save time and make data-driven decisions on my outreach strategies, which is highly valuable for my role. Review collected by and hosted on G2.com.

I do not have any complaints! Review collected by and hosted on G2.com.

Seamless Gmail Integration

Works directly inside Gmail — no extra dashboard or complex setup. Feels native and intuitive.

Easy Personalization at Scale

Pulls contact data from Google Sheets, making personalized mass emails fast and consistent.

Strong Deliverability

Built-in throttling and Google’s own sending infrastructure keep emails out of spam more often.

Smart Automation

Auto follow-ups, drip scheduling, and A/B testing built right into your Gmail workflow.

Detailed Tracking & Analytics

Real-time opens, clicks, replies, and bounce reports — great for campaign optimization.

Affordable Pricing

Far cheaper than most dedicated outreach platforms (no need for separate SMTP or complex APIs).

Simple Setup & Import

No learning curve — connect your Gmail and spreadsheet, and you’re good to go. Review collected by and hosted on G2.com.

Design Limitations

Plain-text focused — not ideal for branded newsletters or heavy HTML formatting.

Dependent on Gmail Quotas

You’re bound by Google’s daily send limits unless you’re on a workspace plan with extensions.

Basic CRM Features

Lacks deeper segmentation, scoring, or workflow automation found in full-fledged CRMs.

Requires Discipline

Overusing it for cold outreach can affect sender reputation; list hygiene is critical.

Limited Team Collaboration

Sharing campaigns or analytics between multiple users isn’t as seamless as in enterprise tools. Review collected by and hosted on G2.com.

I really enjoy using GMass, especially because it has made significant improvements in my email processing and client management for my real estate work. The installation was incredibly easy; I followed the link, completed the download, and moved seamlessly through a quick tutorial. GMass empowers me to send bulk emails to individual recipients effortlessly, which is crucial for me to efficiently follow up with clients and discern interested parties in real estate. The feature of sending individual emails from auto-generated lists is another highlight that improves my productivity. Alongside, the bulk email feature and the ability to create mailing lists have been especially beneficial, providing streamlined communication and effective follow-ups. Additionally, I appreciate how it integrates well with my Gmail account, making everything smoother. Due to these advantages, I'm really satisfied, so much so that I've already purchased a subscription package, indicating my contentment and commitment to continue using GMass. Review collected by and hosted on G2.com.

Nothing yet! Review collected by and hosted on G2.com.

Makes sending mass emails for small businesses, startups, and organizations a breeze, from the comfort of your GMail browser window. Any user, from low-tech to amateur dev to more experienced dev can make powerful use of the feature set that GMass offers, for a fraction of the cost of a commercial mass-mail tool like Mailchimp. It is easy to integrate with Google Sheets, and easy to implement through the GMail extension and add-on. Maintaining an address list in Google Sheets was crucial for our organization. Online documentation is thorough, and the company provides multiple examples that should cover practically any use case that you are attempting to accomplish. Tech support is quick and efficient. After vetting many comparable services, we have come back to GMass again and again! Review collected by and hosted on G2.com.

This is not so much about GMass as it is about Google: You are limited to GMail's daily sending limits (500 for individual accounts; 2,000 for workspace). GMass gives you some ideas for working around this, but it's best to consider staying within the posted limits. Review collected by and hosted on G2.com.