GMass is a Chrome extension that enables users to send email campaigns directly from Gmail. It supports newsletters, cold outreach, and transactional emails at scale.
| Best for | cold email outreach |
| Website | gmass.co |
Facilities and features
- Published pricing
- API
- Integrations
What stands out
The product uses proprietary tech to break Gmail's sending limits.
“Break Gmail's Limits Use proprietary tech for sends larger than Gmail allows.”GMass, own website
The product offers API access for integration with Zapier.
“i ✓ Spam Solver i ✓ Sequences and follow-ups i ✓ API access (+Zapier) i ✓ A/B testing i ✓ Triggered Emails i ✓”GMass, own website
Strengths and trade-offs
- The product uses proprietary tech to break Gmail's sending limits.
- The product offers API access for integration with Zapier.
Appears in
Best email tracking software
1
Snov.io96.02
Streak96.03
GMass92.0RANKINGfull ranking →SOFTWAREVERIFIEDBest cold email software
1
Smartlead98.02
Woodpecker98.03
Apollo.io96.0RANKINGfull ranking →How GMass ranks
#9 in Best cold email software
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 16.
“The GMass Chrome Extension Send mail merges and cold email campaigns from Gmail.”GMass, own website
#3 in Best email tracking software
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 16.
“Deep Analysis is AI insight into your campaign reports 07/25/26 - We've reinvented click tracking.”GMass, own website
Alternatives to GMass
| Snov.io AI ICP and Buyer Persona Generator with contact verification | #1 in Best email tracking software | 96.0 |
| Streak Lightweight CRM operating directly within Gmail inboxes | #2 in Best email tracking software | 96.0 |
 MailmeteorSend personalised emails and manage replies at scale | #4 in Best email tracking software | 92.0 |
 FunnelFLARE Sales Engagement SoftwareIgnite your sales and close deals faster with less effort | #5 in Best email tracking software | 90.0 |
 MaildriplyFree Gmail email tracker for opens and clicks | #6 in Best email tracking software | 90.0 |
 MixmaxTurn your outreach into relationships with AI-powered inbox tools. | #7 in Best email tracking software | 90.0 |
Questions about GMass
Who is GMass best for?
GMass is best for cold email outreach.
Where does GMass rank?
GMass is ranked #3 in Best email tracking software (Lister Score 92.0) and #9 in Best cold email software (Lister Score 92.0).
What are the best alternatives to GMass?
The closest alternatives on Lister are Snov.io (#1 in Best email tracking software), Streak (#2 in Best email tracking software) and Mailmeteor (#4 in Best email tracking software).
Is this your company?
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