+
+

Related Products

  • SalesTarget.ai
    161 Ratings
    Visit Website
  • InboxAlly
    135 Ratings
    Visit Website
  • Monk
    7 Ratings
    Visit Website
  • ActiveCampaign
    17,291 Ratings
    Visit Website
  • Portal Wholesale CRM
    Visit Website
  • Visual Visitor
    251 Ratings
    Visit Website
  • Notifyre
    60 Ratings
    Visit Website
  • gPanel
    69 Ratings
    Visit Website
  • Centrex Software
    18 Ratings
    Visit Website
  • Google Workspace
    69,146 Ratings
    Visit Website

About

A mass email service inside of Gmail. Get the highest open rates you've ever seen. Send cold emails with sequences that maximize responses. Send mail merge campaigns with automatic follow-ups. Pull from Google Sheets, not CSV files. Send emails as replies to the last thread with each person. Personalize. Schedule. Track opens, clicks, replies. Validate your list with our built-in verifier to maximize the deliverability. Say goodbye to CSV files. Connect to Google Sheets to send a personalized mass email using any of the columns in your spreadsheet. 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! The easiest way to send cold email sequences in Gmail.

About

MailDeck is the market-leading enterprise cold email infrastructure platform, engineered from the ground up for high-volume senders who demand uncompromising deliverability at scale. Trusted by sales teams, growth agencies, and revenue organizations sending millions of emails per month, MailDeck provides the most reliable inbox architecture available for cold outreach. The platform seamlessly integrates Google Workspace, Microsoft 365, and a wide range of SMTP providers into a unified, enterprise-grade sending infrastructure.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Professionals interested in a cold/mass email service inside of Gmail

Audience

B2B outreach teams, SDRs, lead generation agencies, recruitment firms, fintech companies, SaaS startups, real estate agents, marketing and growth agencies, PR agencies, sales consultants, founder-led sales teams

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$12.95 per month
Price is per Gmail or G Suite account
Free Version
Free Trial

Pricing

$99 for 30k emails/month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 5.0 / 5
ease 4.5 / 5
features 4.5 / 5
design 4.5 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Correct inbox configuration, proper warmup setup, right workspace delivery, campaign limits handled properly, and genuinely technical support that solves real problems fast.
  • Very simple setup process. Prices are way lower than competitors', which matters a lot when you're buying domains in bulk. Support is responsive and always willing to help with any inquiries. Had a question about tenant configuration and got a clear answer in under 10 minutes.

Cons

  • Onboarding could use more self-serve docs, but support covers the gap well.
  • Would be great to see a built in warmup tool or deliverability dashboard added over time.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

GMass
Founded: 2015
United States
gmass.co

Company Information

MailDeck
Founded: 2025
United States
maildeck.co

Alternatives

lemlist

lemlist

lempire

Alternatives

GBlast

GBlast

Snov.io

Categories

Categories

Email Tracking Features

A/B Testing
Audience Segmentation
Campaign Management
Event-Based Notifications
Location Tracking
Team Management

Integrations

Gmail
Google Workspace
Microsoft 365
Google Chrome
Google Sheets
Hyperise
Microsoft Word
Pitchsail

Integrations

Gmail
Google Workspace
Microsoft 365
Google Chrome
Google Sheets
Hyperise
Microsoft Word
Pitchsail
Claim GMass and update features and information
Claim GMass and update features and information
Claim MailDeck and update features and information
Claim MailDeck and update features and information