A mass email
service inside
Gmail

Get the highest open rates you've ever seen.

Add to Gmail GMass requires Chrome

5-star reviews from 90,000+ happy users

Intro

Used by employees of:

  • Uber
  • Twitter
  • Linkedin
  • Google

Quick Overview

  • Use Gmail to send mail merge campaigns with automatic follow-up emails.

  • Connect to Google Sheets.

  • Personalize. Schedule. Track opens and clicks.

  • Create mass email lists based on search results.

  • Send emails as replies to the last thread with each person.

  • The killer feature: set automatic follow-up emails to be sent sequentially until you get a reply.

Mail merge with Google Sheets

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

Preview

Mass email based on search results

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

Send campaign as replies

Have emails sent as new messages or as replies to the last conversation with each recipient. Sending a campaign "as a reply" results in higher engagement because it becomes part of an existing conversation rather than a new one.

Preview

Try GMass today!

3 seconds to install!

Add to Gmail GMass requires Chrome

Features

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.

Complete Personalization Guide
Reports
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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Scheduling
Scheduling

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

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Break Gmail's Sending Limits
Break Gmail's Sending Limits

Send large email campaigns and break Gmail's sending limits, using our distribution technology. GMass will distribute large campaigns over multiple days or send them via an external SMTP service like SendGrid.

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Automatic Follow-up Emails
Automatic Follow-up Emails

Set automatic follow-up reminder emails to be sent in a sequence until your recipient replies or opens. The best way to boost response rates.

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Google Sheets Integration
Google Sheets Integration

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

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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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Preview mode
Preview mode

Preview all of your emails as Gmail Drafts first. Then send them with one click. Make sure personalization worked and avoid the dreaded "Dear FName" mistake.

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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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Unsubscribe Link
Unsubscribes

Provide an optional unsubscribe link at the bottom of your emails.

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Email List Builder
Email List Builder

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

New messages vs. Replies
New messages or Replies

Campaigns can be sent as new messages to each recipient or as replies to the last conversation with each recipient.

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Testimonials

Most people love GMass. Every now and then, a crumudgeon doesn't. See our thousands of awesome reviews (click the "Reviews" tab).

Try GMass today!

3 seconds to install!

Add to Gmail GMass requires Chrome
Emails