GMass vs Kixie: Cold Email Platform vs Sales Engagement Platform Comparison
Compare GMass (cold email platform) and Kixie (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 built for high-volume email outreach, with unlimited emails, contacts, and campaigns starting at $29.95/mo. Kixie is a sales engagement platform combining a multi-line power dialer, business SMS, and bi-directional CRM integration for multi-channel outreach, priced through custom quotes across three plans.
Key takeaways
- GMass Standard plan starts at $29.95/mo with unlimited emails and contacts, subject to Gmail limits.
- GMass offers four pricing tiers, including a Teams plan for 5 users at $175/mo.
- Kixie uses custom, contact-based pricing across three plans: Professional, Single-Line PowerDialer, and Multi-Line PowerDialer.
- GMass lists 10 key features on its own site, while Kixie lists 12, including Conversation Intelligence and Live Call Coaching.
- GMass integrates with Gmail, Google Sheets, Zapier, and Google Workspace, while Kixie integrates with HubSpot, Salesforce, Zoho, Pipedrive, and Zapier, with Zapier as the only shared integration.
Reviewed and updated September 5, 2026
GMass vs Kixie: Cold Email Platform vs Sales Engagement Platform Comparison
GMass (cold email platform) and Kixie (sales engagement platform) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
GMass is a cold email platform for cold email outreach; Kixie 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 Kixie lists outbound call & text cadences and bi-directional crm integration.
GMass publishes an entry price of $29.95/mo; Kixie uses custom pricing, so the two cannot be compared on list price.
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 Kixie. 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.
Kixie is AI-powered sales communications platform combining a multi-line power dialer, business SMS and a contact center with bi-directional CRM integration. Runs automated outbound calling and texting cadences and adds conversation intelligence for call analysis and coaching.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Standard
Professional Plan
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
Kixie Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Professional Plan | Contact Sales | Unlimited Minutes for US/Canada calls |
| Single-Line PowerDialer | Contact Sales | Unlimited Minutes for US/Canada calls; 1-line PowerDialer |
| Multi-Line PowerDialer | Contact Sales | Unlimited Minutes for US/Canada calls; PowerDial up to 4 lines |
Source: Kixie Pricing
Pricing Analysis
One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.
GMass offers 4 pricing tiers compared to Kixie's 3, 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
- Outbound Call & Text Cadences
- Bi-Directional CRM Integration
- Click-to-Call / Click-to-Text
- SMS Templates
- Team SMS
- Voicemail Drop
- and 6 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
Kixie Key Features
- Outbound Call & Text Cadences
- Bi-Directional CRM Integration
- Click-to-Call / Click-to-Text
- SMS Templates
- Team SMS
- Voicemail Drop
- Live Call Coaching
- IVR Auto-Attendant
- Call Recording
- ConnectionBoost
- Conversation Intelligence
- Developer API
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 Kixie
- Outbound Call & Text Cadences
- Bi-Directional CRM Integration
- Click-to-Call / Click-to-Text
- SMS Templates
- Team SMS
- Voicemail Drop
- Live Call Coaching
- IVR Auto-Attendant
- Call Recording
- ConnectionBoost
- Conversation Intelligence
- Developer API
Integration Ecosystem
GMass Integrations
GMass connects with: Gmail, Google Sheets, Zapier, Google Workspace.
Kixie Integrations
Kixie connects with: HubSpot, Salesforce, Zoho, Pipedrive, Zapier.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by GMass: Gmail, Google Sheets, Google Workspace.
Integrations listed only by Kixie: HubSpot, Salesforce, Zoho, Pipedrive.
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 Kixie
- Teams that need a wide feature set (12 capabilities listed)
- 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 | Kixie |
|---|---|---|
| Starting Price | $29.95/mo | Contact Sales |
| Top Tier Price | $175/mo | Contact Sales |
| Total Features Listed | 10 | 12 |
| 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 Kixie the multi-channel sales outreach and engagement tracking side. GMass publishes an entry price of $29.95/mo, while Kixie uses custom pricing for its plans, so compare on features and on the quote you receive. 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 Kixie for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between GMass and Kixie?
- GMass is a cold email platform built to work inside Gmail for mass email outreach and mail merge campaigns. Kixie is a sales engagement platform centered on an AI-powered multi-line power dialer, business SMS, and bi-directional CRM integration for coordinating outreach across email, phone, and social channels.
- How much does GMass cost?
- GMass has four pricing tiers: Standard at $29.95/mo, Premium at $39.95/mo, Professional at $59.95/mo, and Teams for 5 users at $175/mo. All tiers include unlimited emails, contacts, and campaigns, with Gmail's own sending limits still applying.
- How much does Kixie cost?
- Kixie does not publish list pricing and instead uses custom, contact-sales pricing across three plans: the Professional Plan, Single-Line PowerDialer, and Multi-Line PowerDialer. All three include unlimited minutes for US and Canada calls, with the Multi-Line plan supporting dialing up to 4 lines.
- What integrations does each platform support?
- GMass integrates with Gmail, Google Sheets, Zapier, and Google Workspace. Kixie integrates with HubSpot, Salesforce, Zoho, Pipedrive, and Zapier. Zapier is the only integration both platforms share, so teams with CRM-heavy stacks may lean toward Kixie while Google-centric teams lean toward GMass.
- Should a sales team use GMass, Kixie, or both?
- It depends on the priority: GMass fits budget-conscious teams running high-volume cold email campaigns for pipeline generation, while Kixie fits teams needing a wider feature set and broader CRM integration for multi-channel outreach. The article notes many teams run one of each rather than choosing a single tool.
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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