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GMass: Easiest way to send an email campaign

04/04/25 - New! SpinMax - AI-powered automatic spintax on every single email in your campaign 12/16/24 - Meet ColdSMTP - our game-changing cold email sending server 07/14/25 - You can now send unlimited auto follow-up stages 05/12/25 - Spam Solver now gives you AI-powered suggestions to hit the inbox 04/23/25 - New! Dynamic lists - power your campaigns with live Google Sheet data 05/05/25 - New! Set a daily end time for your campaign 06/20/25 - You can now monitor your campaign sending speed in real time 03/21/25 - Get your free Google Sheets CRM - made for GMass 05/08/25 - New - Set a sending order to control which rows GMass emails first 05/01/25 - You can now view/manage the unsubscribes and bounces for your entire team 05/15/24 - You can now keep a strict count of days between auto follow-ups. 05/15/24 - NEW - 2 settings for handling blocks in campaigns & follow-ups 11/05/24 - Add multiple SMTP servers and easily pick which to use 11/29/24 - New! Set a default time zone for better scheduling 11/12/24 - Our open rates are now even MORE accurate than they were before 05/14/24 - New! Add auto follow-ups *after* a campaign is done sending. 11/06/24 - NEW! Our AI spintax generator creates variations for you right inside GMass 11/07/24 - New - easily clean up your long list of templates in the GMass settings box 05/14/24 - New - Real-time SPF checks when you send a campaign 05/13/24 - Now: Upload a file of unsubscribed addresses. 03/29/24 - New! Add a countdown timer to your campaign to create urgency. 03/29/24 - You can now have ChatGPT write your campaigns for you. 08/30/23 - Replies and bounces are now detected INSTANTLY. 07/18/23 - New Feature! Send triggered emails immediately when a prospect is in their Inbox. 06/22/23 - Achieve perfect deliverability with delivery routes. 03/14/23 - We've launched something big. Reply to emails 10x faster. ×

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- Features
- ###### Break Gmail's Limits

Use our proprietary tech for sends larger than Gmail allows.
- ###### Talk to Google Sheets

Read merge fields and auto-send emails to new rows.
- ###### Campaign Analytics

Sharable reports on opens, clicks, replies and more.
- ###### Personalization

Personalize at scale with mail merges and conditional logic.
- ###### Automatic Follow-up Emails

The best way to boost response rates: Auto follow-up sequences.
- ###### Scheduling

Schedule a mail merge for the future, or set it to repeat.
- ###### Email Polling

Add quick, 1-question surveys to campaigns
- ###### Send As Replies

Send new campaigns as replies to prior messages.
- ###### Segmented Campaigns

Send new emails to a segment of a prior campaign.
- ###### Reply Management

Find and respond to email replies fast, without inbox clutter.
- ###### Unsubscribe Management

Auto unsubscribe management for you and your team.
- ###### Bounce Management

Bounce detection to prevent future sends to bad addresses.
- ###### Email List Builder

Create new, targeted lists by searching your Gmail account.
- ###### AB Testing

Test variations in campaigns and auto-deploy the winner.
- ###### SMTP Integration

Use a third-party SMTP to blow past Gmail’s sending limits.
- ###### Transactional Emails

Send better confirmation emails and more through your Gmail.
- ###### Email Verification

Test every address pre-send to avoid unwanted bounces.
- ###### Templates

Sent emails become future templates for you and your team.
- ###### API

Connect apps to GMass with our REST API, webhooks or Zapier.
- ###### Maximum Deliverability

Use GMass’s suite of tools to wind up in the inbox, not spam.
- Products
- ###### The GMass Chrome Extension

Send mail merges and cold email campaigns from Gmail.
- ###### Inbox, Spam, or Promotions

See where your emails are landing.
- ###### Email Verifier

Verify your email list before you send.
- ###### Email Tester

Test your email for SPF, DKIM, DMARC, blacklistings, and more.
- ###### SMTP Tester

Test your connection to any SMTP service.
- ###### Domain Statistics

See domain-based open and bounce rates.
- ###### Link Checker

Test your links before you send.
- ###### Deliverability Portal

Search our cold email and marketing campaigns, and see stats.
- ###### SMTP Service

A different kind of SMTP service, built on top of Google
- ###### Tracker Blocker

A companion Chrome extension that improves open tracking
- ###### The Reply Project

Reply to emails 10x faster.
- Uses
- ###### Cold Email Outreach

Drive more sales
- ###### Link Building

Scale your backlinks
- ###### Membership Outreach

Keep members informed
- ###### Recruit better

Accept and reject efficiently
- ###### Press Releases

Manage your media outreach
- ###### Political Campaigns

Manage your campaign outreach
- ###### Wedding Invitations

Announce your big day
- ###### Church Emails

Mass emails promoting mass
- ###### HOA Emails

Keep residents informed
- ###### Teacher Communications

Keep your students informed
- ###### Real Estate Marketing

Promote your listings
- ###### Internal Communications

Communicate with your team
- ###### Sports Clubs

Announce the next match
- ###### Beat Makers

Sell your beats!
- Tour
- Blog
- Pricing
- FAQ
- Login
- Add to Gmail

# The easiest way to send an email campaign

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

Add to Gmail GMass requires Chrome

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### 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 **deliverability** — **hit 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.

#### Send cold emails

The easiest way to send cold email sequences in Gmail.

#### 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!

#### We send a lot of email. Watch these live stats grow right before your eyes.
Lifetime emails sent: ...
Emails sent since midnight 9/16/2025: ...

Join the party See more stats

### Features

###### Mass Emails in Gmail

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

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###### 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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###### 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

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

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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###### 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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###### 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

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

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

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Add GMass Extension to Gmail GMass requires Chrome

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###### Interesting

- About us
- What makes GMass better
- What's New?
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###### Categories

- Email Marketing in Gmail
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- Mass Email in Gmail
- Cold Email Master Guide
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