GMass vs TrulyInbox: Cross-Category Comparison
Compare GMass (cold email platform) and TrulyInbox (email warmup tool) side by side. Understand how these tools fit different stages of your sales workflow.
GMass and TrulyInbox serve different workflow stages and are complementary rather than competitive. GMass is a cold email platform starting at $30/month that executes campaigns directly from Gmail with unlimited contacts and automated follow-ups. TrulyInbox is an email warmup tool starting at free that prepares domains for deliverability with customizable reply rates and ramp-up schedules. Most revenue teams benefit from using both tools together.
Key takeaways
- GMass starts at $30/month for unlimited contacts and campaigns executed directly inside Gmail, while TrulyInbox offers a free plan with 10 warmup emails per day and paid plans starting at $29/month.
- TrulyInbox supports unlimited email account connections on all paid plans with customizable reply rates ranging from 10% to 65% depending on the plan tier.
- The two tools share only two integrations in common (Gmail and Google Workspace), making it straightforward to connect them in a unified workflow.
- GMass includes 10 core features focused on campaign execution including mail merge personalization, A/B testing, and automated follow-up sequences, while TrulyInbox provides 8 features centered on deliverability preparation.
- Teams typically use both tools together because GMass handles campaign execution while TrulyInbox manages deliverability preparation at different stages of the email workflow.
Reviewed and updated February 6, 2026
GMass vs TrulyInbox: Cross-Category Comparison
Should you invest in a dedicated cold email platform like GMass or a email warmup tool like TrulyInbox? This is a common question for revenue teams building their outbound infrastructure. The answer depends on where your biggest gaps are.
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.
TrulyInbox is a email warmup tool focused on email domain warming and deliverability. Cost-effective email warmup platform that supports unlimited inbox connections on paid plans, with customizable reply rates, ramp-up schedules, and real-time deliverability scoring.
Where Each Tool Fits in Your Workflow
| Aspect | GMass | TrulyInbox |
|---|---|---|
| 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 | Free |
| Features Listed | 10 | 8 |
| Integrations | 4 | 7 |
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
TrulyInbox Pricing (as of February 2026)
| Plan | Price | Emails |
|---|---|---|
| Free | Free | 10 warmup emails/day |
| Starter | $29/mo | 100 warmup emails/day |
| Growth | $79/mo | 1,000 warmup emails/day |
| Scale | $189/mo | 3,000 warmup emails/day |
| Business | $289/mo | 6,000 warmup emails/day |
Source: TrulyInbox 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 TrulyInbox starts at $0/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
TrulyInbox Key Capabilities (Email Warmup Tool)
- Unlimited email account connections on all paid plans
- Customizable reply rate per plan (10% to 65%)
- Customizable email ramp-up schedules
- Human-like email interaction simulation
- Real-time deliverability score tracking
- Multiple email open simulation for natural engagement
- Advanced warmup settings on higher plans
- Free forever plan with 1 inbox
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.
TrulyInbox Integrations
TrulyInbox connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, Yahoo Mail.
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 TrulyInbox
- 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 ($0/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 TrulyInbox 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 TrulyInbox Alternatives in 2026
- GMass vs Instantly: Cold Email Platform Comparison
- GMass vs Smartlead: Cold Email Platform Comparison
- Mailreach vs TrulyInbox: Email Warmup Tool Comparison
Pricing and features verified as of February 2026. Visit GMass and TrulyInbox for current information.
Frequently asked questions.
Frequently asked questions- Should I use GMass or TrulyInbox for cold email outreach?
- Use GMass for executing cold email campaigns and TrulyInbox for warming up your email domains before sending. These tools address different workflow stages rather than competing directly. GMass focuses on campaign execution with features like mail merge, automated follow-ups, and A/B testing starting at $30/month. TrulyInbox prepares your domains for better deliverability through email warming, starting with a free plan. Most revenue teams use both tools together for a complete outbound email infrastructure.
- Can GMass and TrulyInbox work together in the same workflow?
- Yes, GMass and TrulyInbox are designed to be complementary in your email workflow. Both integrate with Gmail and Google Workspace, making it straightforward to connect them in your tech stack. TrulyInbox warms up your email domains and improves deliverability scores, while GMass executes the actual cold email campaigns. This combination addresses both deliverability preparation and campaign execution stages, which is why many sales teams invest in both tools rather than choosing one over the other.
- What's the price difference between GMass and TrulyInbox?
- GMass starts at $30/month for the Standard plan with unlimited contacts and emails (subject to Gmail limits), while TrulyInbox offers a free forever plan with 10 warmup emails per day. TrulyInbox's paid plans start at $29/month for 100 warmup emails daily. Direct price comparison requires context since they serve different purposes—GMass for campaign execution and TrulyInbox for domain warming. Teams often budget for both tools because they address different workflow gaps rather than duplicating functionality.
- How many email accounts can I connect to TrulyInbox?
- TrulyInbox allows unlimited email account connections on all paid plans starting at $29/month. The free plan supports 1 inbox with 10 warmup emails per day. This unlimited connection feature across paid tiers makes TrulyInbox scalable for teams managing multiple domains or sender accounts. The tool supports Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, and Yahoo Mail, giving you flexibility in which email providers you can warm up.
- Does GMass include email warmup features like TrulyInbox?
- GMass includes a Spam Solver deliverability tool but focuses primarily on campaign execution rather than dedicated email warmup. TrulyInbox specializes in warming with features like customizable reply rates (10% to 65%), ramp-up schedules, human-like interaction simulation, and real-time deliverability scoring. While GMass can help with deliverability through features like inbox rotation and custom tracking links, teams serious about domain warming typically use a specialized tool like TrulyInbox alongside GMass for comprehensive coverage of both workflow stages.
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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