GMass: Easiest way to send an email campaign

The easiest way to send an email campaign

Hit Compose in Gmail, enter your list, subject, and message.

5-star reviews from 300,000+ happy users

Intro

What can GMass do?

  • Turn Gmail into an email marketing and cold email platform

  • Use mail merge personalization with Google Sheets

  • Verify your list, test links, & fix spam triggers before you send

  • Maximize your deliverabilityhit the inbox, not the spam folder

  • Send automated follow-up sequences

  • Break Gmail’s limits — send virtually unlimited emails

Mail merge with Google Sheets

Say goodbye to CSV files. Connect to Google Sheets to send a personalized mass email announcement or newsletter using any of the columns in your spreadsheet.

Preview

Send cold emails

The easiest way to send cold email sequences in Gmail.

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Build your list from existing contacts

Use Gmail's powerful search feature to find messages containing recipients to whom you want to email. Then click the Build Email List button, and a Compose window will load containing the email addresses found in those messages. The only mass email service that does this!

Preview

We send a lot of email. Watch these live stats grow right before your eyes.

Lifetime emails sent: 8,060,767,985
Emails sent since midnight 2/4/2025: 4,332,537

Features

Break Gmail's Sending Limits
Mass Emails in Gmail

Our mass email service can break Gmail's sending limits using our distribution technology.

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Google Sheets Integration
Mail Merge with Google Sheets

GMass will read data live from any Google Sheet and even monitor for new rows and then send emails automatically.

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Reports
Email Reporting Analytics

Campaign level reports that show how many people opened, clicked, replied, and bounced. See reports inside Gmail on your desktop or the Gmail app on your phone.

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Personalization
Personalization

Personalize to your heart's content. Connect to a Google Sheet and personalize with any column, or use basic first and last name personalization without a spreadsheet. Use fallback values. Don't know someone's first name? We'll auto-detect it.

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Automatic Follow-up Emails
Automatic Follow-up Emails

Sending cold email? Set automatic follow-up emails to send in a sequence until your recipient replies. The best way to boost response rates.

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Scheduling
Schedule Mass emails and Mail Merges

Schedule a mail merge for any time in the future, or set it to repeat daily or hourly.

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Manual Follow-up Campaigns
Behavior-based Campaigns

Send to a segment of a prior campaign, like everyone who opened the last campaign, or everyone who didn't click the last campaign.

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Reply Management
Reply Management

Emails received in response to a mass email, including replies and bounces, are automatically categorized for you, preventing Inbox clutter.

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Email List Builder
Email List Builder

Find email addresses deep inside your Gmail account just by searching.

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Do people love us or hate us?

Most people love GMass. Every now and then, a curmudgeon doesn't. See our thousands of awesome reviews (click the "Reviews" tab). Still not convinced? Here's why GMass is better.

"Today is 12/23/2023 and GMass is still the best I've used. I can see what bounced, how many opened and it's fast. I have used other CRMs they don't allow purchased lists or large files. The ones I have tried who do, simply don't work or send e-mails as promised and you can't send animated GIF. GMass allows me to send the animated e-mails! wonderful product and much less expensive than the others that simply don't meet my needs. I sent myself an e-mail with it and it came to my inbox, I don't know if the others are making it to the inboxes, it sure would be good to know."

Stop Foreclosure 12/27/2017

GMass