GMass
GMass is a powerful email marketing and cold email solution that works directly inside your Gmail account to help you send mass campaigns and automated follow-ups easily.
Mailshake
Mailshake is a sales engagement software that helps you automate personalized cold email outreach, track engagement, and manage lead follow-ups to scale your outbound sales and book more meetings.
Quick Comparison
| Feature | GMass | Mailshake |
|---|---|---|
| Website | gmass.co | mailshake.com |
| Pricing Model | Freemium | Subscription |
| Starting Price | Free | $29/month |
| FREE Trial | ✘ No free trial | ✘ No free trial |
| Free Plan | ✓ Has free plan | ✘ No free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2015 | 2015 |
| Headquarters | Chicago, USA | Austin, USA |
Overview
GMass
GMass turns your regular Gmail or Google Workspace account into a full-featured email marketing platform. You can send mass emails, create complex mail merges using Google Sheets data, and schedule automated follow-up sequences that stop once a recipient replies. It lives entirely inside your Gmail interface, so you don't have to learn a new dashboard or export your contacts to external software.
You can use it to bypass Gmail's sending limits by connecting to external SMTP services or stay within standard limits for smaller outreach. It solves the problem of low engagement by making every mass email look like a personal, one-on-one message. Whether you are a recruiter, salesperson, or non-profit organizer, you can manage your entire outreach strategy without ever leaving your inbox.
Mailshake
Mailshake is a sales engagement platform designed to help you automate your outbound outreach at scale. You can send personalized cold emails, monitor opens and clicks, and set up automated follow-up sequences that stop once a lead replies. It simplifies the process of managing high-volume prospecting while maintaining a personal touch that keeps your emails out of the spam folder.
The platform integrates directly with your existing Gmail, Outlook, or SMTP email accounts to ensure high deliverability. You can manage your entire sales pipeline from a single dashboard, making it an ideal solution for sales development reps, founders, and agencies who need to generate more leads without spending hours on manual manual follow-ups.
Overview
GMass Features
- Google Sheets Integration Connect your spreadsheets directly to Gmail to personalize every email with custom data fields from your rows.
- Automated Follow-ups Set up a sequence of emails that send automatically until your recipient replies, clicks, or opens your message.
- Email Reporting Track opens, clicks, and replies in real-time with detailed analytics reports generated right inside your Gmail account.
- Behavior-based Campaigns Send new emails specifically to people who opened or clicked your previous messages to maximize your conversion rates.
- Scheduling Draft your emails now and schedule them to go out at the exact time your prospects are most active.
- List Segmentation Filter your mailing lists based on past engagement to ensure you only message the most relevant contacts.
Mailshake Features
- Automated Email Sequences. Schedule personalized email sequences and automated follow-ups that trigger based on your prospect's behavior or time intervals.
- Mailshield Cleaning. Verify your email lists automatically to reduce bounce rates and protect your sender reputation before you hit send.
- Lead Driver. Manage all your lead interactions in one place and track which prospects are most engaged with your content.
- Personalization Tags. Use powerful mail merge features to insert custom text, links, and images for every recipient in your campaign.
- A/B Testing. Test different subject lines and email body copy to see which versions generate the most replies and conversions.
- Native Phone Dialer. Make cold calls directly from your browser and log your call outcomes alongside your email activity for a multi-channel approach.
Pricing Comparison
GMass Pricing
- Up to 50 emails per day
- All standard features included
- Gmail-based sending
- Basic campaign tracking
- GMass branding on emails
- Everything in Free, plus:
- Unlimited email sending
- No GMass branding
- Basic mail merge features
- Address verification tool
- Email support
Mailshake Pricing
- Connect 1 email account
- 1,500 emails per month
- Email personalization
- Automated follow-ups
- AI Email Writer
- Gmail/Outlook/SMTP integrations
- Everything in Starter, plus:
- Connect 1 email account
- 5,000 emails per month
- Native phone dialer
- Multi-channel sequences
- Lead Driver dashboard
- Priority support
Pros & Cons
GMass
Pros
- No new software to learn since it lives in Gmail
- Powerful Google Sheets integration for easy personalization
- Reliable automated follow-up sequences increase reply rates
- High deliverability by using Google's own mail servers
- Simple setup process takes less than a minute
Cons
- Requires Google Chrome to use the browser extension
- Interface can feel cluttered inside the Gmail window
- Daily sending limits are tied to Google's restrictions
Mailshake
Pros
- Extremely intuitive interface that is easy to navigate
- Excellent deliverability rates with built-in warm-up tools
- Simple setup process for Gmail and Outlook users
- Effective automated follow-ups that increase reply rates
Cons
- No free trial available to test features
- Daily sending limits can be restrictive for some
- Limited reporting depth on the entry-level tier