GMass vs Mailreach: Cross-Category Comparison
Compare GMass (cold email platform) and Mailreach (email warmup tool) side by side. Understand how these tools fit different stages of your sales workflow.
GMass and Mailreach serve different stages of email outreach: GMass is a cold email platform for campaign execution starting at $30/month, while Mailreach is an email warmup tool for deliverability preparation starting at $25/month. They have minimal feature overlap and are complementary rather than competitive—many B2B sales teams use both tools together since GMass handles sending campaigns while Mailreach prepares domains for better inbox placement.
Key takeaways
- GMass starts at $30/month for unlimited contacts and campaigns within Gmail, while Mailreach starts at $25/month for warming 1-5 inboxes with up to 100 warmup emails per day per inbox.
- The two tools share only two integrations (Gmail and Google Workspace), with GMass offering 4 total integrations and Mailreach offering 9.
- GMass provides 10 key features focused on cold email outreach including mail merge personalization, A/B testing, and automated follow-up sequences.
- Mailreach delivers 8 key features centered on deliverability including AI warming algorithms, automated spam testing with 20+ credits, and domain health scoring.
- Both tools integrate with Gmail and Google Workspace, making them straightforward to connect in a unified workflow.
Reviewed and updated February 6, 2026
GMass vs Mailreach: Cross-Category Comparison
Teams building a B2B sales stack often face a choice between investing in cold email outreach (GMass) or email domain warming and deliverability (Mailreach). This comparison helps you understand what each tool does, where they overlap, and how they fit into your workflow.
Why Compare These Two Tools?
Both tools address email outreach, but at different stages. Email sending platforms execute campaigns while warmup tools prepare domains for better deliverability. Teams often evaluate whether an all-in-one platform can handle both or if dedicated tools perform better.
GMass is a cold email platform focused on cold email outreach. Gmail-based mass email and mail merge platform with unlimited emails, campaigns, and contacts directly inside Gmail.
Mailreach is a email warmup tool focused on email domain warming and deliverability. Email warmup and deliverability platform that uses a smart algorithm with dozens of parameters to generate positive engagement signals, paired with built-in spam testing and DNS monitoring.
Where Each Tool Fits in Your Workflow
| Aspect | GMass | Mailreach |
|---|---|---|
| Category | Cold Email Platform | Email Warmup Tool |
| Workflow Stage | Campaign execution | Deliverability preparation |
| Primary Focus | Cold email outreach | Email domain warming and deliverability |
| Starting Price | $30/mo | $25/mo |
| Features Listed | 10 | 8 |
| Integrations | 4 | 9 |
Pricing Comparison
GMass Pricing (as of February 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Standard | $30/mo | Unlimited | Unlimited (Gmail limits apply) |
| Premium | $40/mo | Unlimited | Unlimited (Gmail limits apply) |
| Professional | $60/mo | Unlimited | Unlimited (Gmail limits apply) |
| Teams (5 users) | $175/mo | Unlimited | Unlimited (Gmail limits apply) |
Source: GMass Pricing
Mailreach Pricing (as of February 2026)
| Plan | Price | Emails |
|---|---|---|
| Starter (1-5 inboxes) | $25/mo | Up to 100 warmup emails/day per inbox |
| Growth (6-20 inboxes) | $19.5/mo | Up to 100 warmup emails/day per inbox |
| Scale (21-50 inboxes) | $18/mo | Up to 100 warmup emails/day per inbox |
| Enterprise (51+ inboxes) | $16/mo | Up to 100 warmup emails/day per inbox |
Source: Mailreach Pricing
Pricing Context
These tools serve different purposes, so a direct price comparison requires context. GMass starts at $30/mo for cold email outreach, while Mailreach starts at $25/mo for email domain warming and deliverability. Many teams end up paying for both since they address different workflow stages.
Feature Highlights
GMass Key Capabilities (Cold Email Platform)
- 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
Mailreach Key Capabilities (Email Warmup Tool)
- Smart AI warming algorithm with dozens of parameters
- Automated spam testing with 20+ credits included
- MailReach Co-Pilot AI deliverability assistant
- Blacklist, SPF, DKIM, and DMARC monitoring
- Reputation tracking dashboard per inbox
- Human-like email engagement patterns
- Domain and inbox health scoring
- Gradual ramp-up of warmup volume
Feature Overlap
These tools have minimal feature overlap, which makes sense given their different categories. They are more complementary than competitive.
Integration Ecosystem
GMass Integrations
GMass connects with: Gmail, Google Sheets, Zapier, Google Workspace.
Mailreach Integrations
Mailreach connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho, SMTP, Mailgun, SendGrid, Amazon SES.
Shared Integrations
Both tools integrate with: Gmail, Google Workspace. This shared ecosystem means they can work together in your tech stack.
When to Choose GMass
- Your biggest gap is in campaign execution
- You already have a solid email warmup tool and need specialized cold email outreach capabilities
- You want an affordable entry point ($30/mo)
- Your team's primary bottleneck is cold email outreach
When to Choose Mailreach
- Your biggest gap is in deliverability preparation
- You already have a cold email platform and need better email domain warming and deliverability
- You want an affordable entry point ($25/mo)
- Your team's primary bottleneck is email domain warming and deliverability
Using Both Together
Many sales teams use both a cold email platform and a email warmup tool as part of their complete workflow. GMass handles campaign execution while Mailreach covers deliverability preparation.
Since both tools integrate with Gmail, Google Workspace, connecting them in your workflow is straightforward.
Decision Framework
- Map your workflow gaps. Which stage needs the most improvement: campaign execution or deliverability preparation?
- Check your existing stack. Do you already have a tool covering one of these categories?
- Consider your budget. Can you invest in both, or do you need to prioritize one?
- Trial both. Sign up for free trials to evaluate each tool in your actual workflow.
- Measure ROI separately. Track the impact of each tool on its specific workflow stage.
Related Reading
- Best GMass Alternatives in 2026
- Best Mailreach Alternatives in 2026
- GMass vs Instantly: Cold Email Platform Comparison
- GMass vs Smartlead: Cold Email Platform Comparison
- Mailreach vs Warmbox: Email Warmup Tool Comparison
Pricing and features verified as of February 2026. Visit GMass and Mailreach for current information.
Frequently asked questions.
Frequently asked questions- Should I use GMass or Mailreach for my sales team?
- The choice depends on your primary workflow gap. Choose GMass if your bottleneck is campaign execution and you need a cold email platform to send outreach at scale. Choose Mailreach if your challenge is email deliverability and you need to warm domains before sending campaigns. Many teams use both since GMass handles sending while Mailreach prepares domains for better inbox placement.
- Can GMass and Mailreach work together in the same tech stack?
- Yes, GMass and Mailreach are complementary tools that work well together. Both integrate with Gmail and Google Workspace, making them easy to connect in your workflow. Mailreach warms your email domains to improve deliverability, then GMass executes your cold email campaigns. Many B2B sales teams use this combination as part of their complete outreach workflow.
- How much does it cost to use both GMass and Mailreach?
- Using both tools together starts at $55/month—$30/month for GMass Standard plan and $25/month for Mailreach Starter plan. GMass provides unlimited contacts and campaigns within Gmail limits, while Mailreach warms 1-5 inboxes with up to 100 warmup emails per day per inbox. Pricing increases with higher-tier plans that offer additional features or capacity.
- What's the main difference between a cold email platform and an email warmup tool?
- Cold email platforms like GMass focus on campaign execution—sending personalized outreach emails at scale with features like mail merge, follow-up sequences, and A/B testing. Email warmup tools like Mailreach focus on deliverability preparation—gradually building your domain's sender reputation through automated engagement signals, spam testing, and DNS monitoring. They address different stages of the sales workflow.
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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