The Easiest Mail Merge Solution
for Gmail

Seamlessly connect Google Sheets, personalize emails at scale, automate follow-ups, and track engagement all without leaving Gmail.

GMass for Mail Merge

Here's how GMass makes mail merge faster, smarter, and more effective:

Connect Google Sheets Instantly

GMass connects directly with Google Sheets, allowing you to sync contacts in real time. Simply link your sheet, and every column becomes a merge field you can use in your emails. No manual data entry or CSV uploads required.

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Personalize Every Email at Scale

Turn every mass email into a one-on-one conversation. Use dynamic fields to insert names, dates, job titles, or any custom details. You can even add personalized links, images, and attachments to make your emails more engaging.

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Automate Follow-Ups Without Manual Work

Following up manually is exhausting. GMass allows you to send automated follow-ups based on recipient behavior. If someone doesn’t reply, a follow-up email is sent at your set intervals. Once they respond, follow-ups stop automatically.

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Track and Optimize Every Email Campaign

Get real-time analytics on opens, clicks, and replies right inside Gmail. Use this data to refine your campaigns and improve engagement without switching between platforms.

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"My favorite mail-merge service. Gmass has been a game changer for my business, and the new with the user multi-user feature is amazing. Also, I think it has the best UI of its kind."

Antonio J B.

Founder

Send Your First (or Next) Mail Merge Campaign in Minutes

GMass makes it quick and easy to go from setup to sending in just five steps:

Install GMass

GMASS powerfull

Import or Create Your Email List

Choose a Google Sheet

Write Your Email

Boost in MRR in 3 Months

Choose Campaign Settings

Spam Solver

Send and Track Results

GMASS Click

Install GMass

GMASS powerfull

Connect or Create Your Email List

Choose a Google Sheet

Write and Personalize Your Email

Boost in MRR in 3 Months

Choose Campaign Settings & Click Send

Spam Solver

Track and Analyze Results

GMASS Click

Install GMass

Add GMass from the Chrome Web Store and connect it to your Gmail account in seconds.

Connect or Create Your Email List

Link a Google Sheet, use an existing contact list, or enter emails directly in Gmail. No need for CSV uploads or manual imports.

Write and Personalize Your Email

Use Gmail’s familiar interface to draft your email. Add personalization with merge fields, include attachments, and customize your message for each recipient.

Choose Campaign Settings & Click Send

Set schedules, add follow-ups, or run a deliverability test before sending. Then, click the GMass button to launch your campaign.

Track and Analyze Results

Monitor opens, clicks, replies, and bounces in real time to optimize your campaigns and maximize engagement.

Scale Your Campaigns Without Limits

Send thousands of emails effortlessly. GMass works inside Gmail and integrates with SMTP to bypass Gmail’s sending caps for high-volume outreach.

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Deliver Emails That Land in Inboxes

Leverage GMass’s Spam Solver to test and tweak your emails, ensuring maximum deliverability. Stop guessing and ensure your emails hit inboxes, not spam folders.

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Boost Engagement with Automated Follow-Ups

Set up personalized follow-ups that automatically stop when your recipient responds. Save time while increasing reply rates with GMass’s intuitive follow-up system.

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Track and Analyze Your Results

Know exactly how your campaigns are performing with real-time analytics for opens, clicks, replies, and bounces — all within Gmail.

start for free

Scale Your Campaigns Without Limits

Install Gmass

Install GMass from the Chrome Web Store and connect it to your Gmail account in seconds.

Deliver Emails That Land in Inboxes

Import or Create Your Email List

Connect a Google Sheet, import a list, or type emails directly into Gmail.

Boost Engagement with Automated Follow-Ups

Write Your Email

Draft your email using Gmail’s familiar interface. Personalize it with dynamic fields easily.

Track and Analyze Your Results

Choose Campaign Settings

Schedule your emails, add automated follow-ups, or test for spam placement.

Track and Analyze Your Results

Send and Track Results

Click the GMass button to send. Track opens, clicks, and replies in real time — all inside Gmail

Send Your First (or Next) Email Campaign in Just 5 Minutes

GMass makes it quick and easy to go from setup to sending — all within Gmail. Here’s how it works in 5 simple steps.

Install GMass

Install GMass from the Chrome Web Store and connect it to your Gmail account in seconds.

Import or Create Your Email List

Connect a Google Sheet, import a list, or type emails directly into Gmail.

Write Your Email

Draft your email using Gmail’s familiar interface. Personalize it with dynamic fields easily.

Choose Campaign Settings

Schedule your emails, add automated follow-ups, or test for spam placement.

Send and Track Results

Click the GMass button to send. Track opens, clicks, and replies in real time — all inside Gmail.

Don’t Just Take Our Word for It

Trusted by 350,000+ users worldwide, GMass is the top choice for email marketing, cold outreach, and mail merge. See what our users have to say:

Office Davian Coaches

Simple set up and love the 'how to' videos. makes life that much easier to reach clients and wish them a Happy Christmas!

Isha Niraj

I have been using Gmass since last few years and it made my job really easy. Being a marketer it helps me alot to promote my product without wasting time on sending it one by one to each clients. I recommend this to everybody.

Daniel Greenberg

This is one of the best tools i have ever used i cannot recommend it enough.

Maria Correa

Absolutely useful! I was having issues connecting the spreadsheets, but the videos helped me so much.

Jonathan Burstein

I've been using GMass for the past couple of weeks and it has been great! Easy integrations and good deliverability.

heidi anthbot

I've been using GMass for over 5 years, starting as a recipient. It was free at first, but now it's paid. While I'm exploring alternatives, GMass remains my top choice for my new job.

Indira Fellowship

GMass has been a game-changer for our email outreach! Its seamless integration with Gmail and powerful automation features have saved us hours of manual work while delivering exceptional results.

OXYZEN WEALTH

Best tool that kept me occupied with work

Avi W

I've tried other versions of mail messenger. GMass is by far the most efficient and has the most capability to customize campaigns and many added features which I am still learning more about all of the time.

Most importantly, their customer service is great. Real people with real answers, quickly and efficiently, directly addressing my questions or concerns.

Quanice Floyd

It's easy to use and helps me get out emails extremely fast! This is godsend for someone who has to send thousands of emails a week!

Alexa T

Absolute gem of a tool for Marketing.

Its combination of powerful features and ease of integration makes it an excellent choice for marketers looking to enhance their outreach effort. The tracking is effortless and integration is very very easy for DIY.  Solid tool Team GMass!

The Easiest Mail Merge Solution for Gmail

Send Your First (or Next) Email Campaign in Just 5 Minutes

Join 350,000+ Marketers, Businesses, and Teams Using GMass for Mail Merge.

The Easiest Mail Merge Solution
for Gmail