GMass vs Zeekeo: Cold Email Platform vs Sales Engagement Platform Comparison
Compare GMass (cold email platform) and Zeekeo (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
GMass is a Gmail-based cold email platform starting at $29.95 per month, built for high-volume email outreach with unlimited contacts and campaigns. Zeekeo is a sales engagement platform starting at $149 per month, covering email and LinkedIn outreach, AI-powered messaging, and reply intelligence. GMass suits budget-focused email volume; Zeekeo suits multi-channel outbound coordination.
Key takeaways
- GMass's entry plan costs $29.95 per month while Zeekeo's entry plan costs $149 per month.
- GMass offers 4 pricing tiers, Standard, Premium, Professional, and Teams, compared to Zeekeo's 2 tiers, DIY and Done-For-You.
- GMass integrates with Gmail, Google Sheets, Zapier, and Google Workspace, while Zeekeo integrates with HubSpot, Salesforce, Zapier, Google, and Microsoft.
- Zapier is the only integration listed by both GMass and Zeekeo.
- Zeekeo is sold either as self-serve seats or as a managed service where Zeekeo builds and runs the outbound motion.
Reviewed and updated September 5, 2026
GMass vs Zeekeo: Cold Email Platform vs Sales Engagement Platform Comparison
Sales teams building an outbound stack often weigh GMass, a cold email platform for cold email outreach, against Zeekeo, a sales engagement platform for multi-channel sales outreach and engagement tracking. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
GMass is a cold email platform for cold email outreach; Zeekeo is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, GMass lists works inside gmail and unlimited emails, contacts, and campaigns, and Zeekeo lists email + linkedin outreach and ai-powered messaging & sequences.
GMass offers a lower entry point at $29.95/mo compared to Zeekeo at $149/mo.
If your priority is sending campaigns that land in the inbox and generate replies, GMass is the one built for it; for coordinating outreach across email, phone, and social channels, that is Zeekeo. Many teams run one of each.
Understanding the Core Difference
GMass is Gmail-based mass email and mail merge platform with unlimited emails, campaigns, and contacts directly inside Gmail.
Zeekeo is Outbound platform that runs email and LinkedIn campaigns from one system, with prospecting and data enrichment, AI-powered messaging and sequences, A/B testing and reply intelligence. Sold either as self-serve seats or as a managed service where Zeekeo builds and runs the outbound motion.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Standard
Zeekeo DIY
GMass Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Standard | $29.95/mo | Unlimited | Unlimited (Gmail limits apply) |
| Premium | $39.95/mo | Unlimited | Unlimited (Gmail limits apply) |
| Professional | $59.95/mo | Unlimited | Unlimited (Gmail limits apply) |
| Teams (5 users) | $175/mo | Unlimited | Unlimited (Gmail limits apply) |
Source: GMass Pricing
Zeekeo Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Zeekeo DIY | $149/mo | Per seat; volume discounts on more seats | Not published |
| Zeekeo Done-For-You | Contact Sales | Managed service | Not published |
Source: Zeekeo Pricing
Pricing Analysis
GMass is more affordable at the entry level ($29.95/mo vs $149/mo). For teams with tight budgets or those just getting started with cold email outreach and multi-channel sales outreach and engagement tracking, this price difference matters.
GMass offers 4 pricing tiers compared to Zeekeo's 2, giving you more granularity as you scale.
Features Breakdown
- Works inside Gmail
- Unlimited emails, contacts, and campaigns
- Mail merge personalization
- Free email verification
- Automated follow-up sequences
- A/B testing
- and 4 more listed below
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- and 4 more listed below
GMass Key Features
- Works inside Gmail
- Unlimited emails, contacts, and campaigns
- Mail merge personalization
- Free email verification
- Automated follow-up sequences
- A/B testing
- Spam Solver deliverability tool
- Custom tracking links
- Inbox rotation
- API and Zapier access
Zeekeo Key Features
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- LinkedIn post creation & scheduling
- Image & GIF personalization
- Workflow automation
- Targeted calling & appointment setting
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by GMass
- Works inside Gmail
- Unlimited emails, contacts, and campaigns
- Mail merge personalization
- Free email verification
- Automated follow-up sequences
- A/B testing
- Spam Solver deliverability tool
- Custom tracking links
- Inbox rotation
- API and Zapier access
Listed only by Zeekeo
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- LinkedIn post creation & scheduling
- Image & GIF personalization
- Workflow automation
- Targeted calling & appointment setting
Integration Ecosystem
GMass Integrations
GMass connects with: Gmail, Google Sheets, Zapier, Google Workspace.
Zeekeo Integrations
Zeekeo connects with: HubSpot, Salesforce, Zapier, Google, Microsoft.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by GMass: Gmail, Google Sheets, Google Workspace.
Integrations listed only by Zeekeo: HubSpot, Salesforce, Google, Microsoft.
Use Case Recommendations
Best Fit for GMass
- Budget-conscious teams looking for an affordable cold email platform
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Best Fit for Zeekeo
- Mid-market to enterprise teams with established multi-channel sales outreach and engagement tracking budgets
- Organizations with complex tech stacks needing broad integration support (5 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | GMass | Zeekeo |
|---|---|---|
| Starting Price | $29.95/mo | $149/mo |
| Top Tier Price | $175/mo | Contact Sales |
| Total Features Listed | 10 | 10 |
| Integrations | 4 | 5 |
| Founded | 2015 | N/A |
Getting Started Checklist
- Define your cold email outreach and multi-channel sales outreach and engagement tracking requirements and monthly budget
- Estimate your expected email sending volume and sequences and engagement actions to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
GMass serves the cold email outreach side of an outbound stack and Zeekeo the multi-channel sales outreach and engagement tracking side. GMass offers a more accessible entry point at $29.95/mo, while Zeekeo starts at $149/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit GMass and Zeekeo for current information.
Frequently asked questions.
Frequently asked questions- What's the main difference between GMass and Zeekeo?
- GMass is a cold email platform built to work inside Gmail for mass email and mail merge outreach, while Zeekeo is a sales engagement platform that runs email and LinkedIn campaigns together with AI-powered messaging, prospecting, and reply intelligence. GMass focuses on cold email volume, Zeekeo focuses on multi-channel outbound coordination.
- How much do GMass and Zeekeo cost?
- GMass starts at $29.95 per month for its Standard plan, with Premium at $39.95 per month, Professional at $59.95 per month, and a 5-user Teams plan at $175 per month. Zeekeo's DIY plan starts at $149 per month per seat with volume discounts, and its Done-For-You managed service requires contacting sales.
- Which tool has more pricing options?
- GMass offers 4 pricing tiers, Standard, Premium, Professional, and Teams, giving more granularity as usage scales. Zeekeo offers 2 pricing tiers, DIY for self-serve seats and Done-For-You for a managed service where Zeekeo builds and runs the outbound motion, with pricing available on request.
- What integrations do GMass and Zeekeo support?
- GMass connects with Gmail, Google Sheets, Zapier, and Google Workspace. Zeekeo connects with HubSpot, Salesforce, Zapier, Google, and Microsoft. Zapier is the only integration listed by both platforms, so teams needing CRM connections like HubSpot or Salesforce would look to Zeekeo rather than GMass.
- Should a sales team use GMass, Zeekeo, or both?
- It depends on the priority: GMass fits budget-conscious teams running high-volume cold email campaigns, agencies managing client outreach, and SDR teams focused on pipeline generation. Zeekeo fits teams coordinating outreach across email, LinkedIn, and phone with engagement tracking. The article notes many teams run one of each.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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