TrulyInbox vs Warmbox: Email Warmup Tool Comparison
Compare TrulyInbox and Warmbox side by side. See pricing, features, and integrations to choose the right email warmup tool for your needs.
TrulyInbox offers unlimited email account connections on all paid plans starting at free (10 warmup emails/day), while Warmbox starts at $19/month (50 warmup emails/day) with AI-powered interactions and DNS checking tools. TrulyInbox provides better pricing flexibility with five tiers versus Warmbox's four, making it more accessible for budget-conscious teams testing email warmup strategies.
Key takeaways
- TrulyInbox's free plan includes 10 warmup emails per day with 1 inbox, while Warmbox's entry plan costs $19/month for 50 warmup emails per day.
- TrulyInbox offers customizable reply rates ranging from 10% to 65% depending on the plan tier selected.
- Warmbox exclusively integrates with Amazon SES, offering 8 total integrations compared to TrulyInbox's 7.
- Both platforms support the same core email providers including Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, and Yahoo Mail.
- TrulyInbox's highest plan costs $289/month for 6,000 warmup emails daily, while Warmbox requires contacting sales for enterprise pricing.
Reviewed and updated February 6, 2026
TrulyInbox vs Warmbox: Email Warmup Tool Comparison
Finding the right email warmup tool can directly impact your revenue pipeline. TrulyInbox and Warmbox both aim to solve the same core problem (building sender reputation and improving inbox placement), yet they approach it differently. Let's break down the specifics.
The Quick Answer
TrulyInbox stands out with unlimited email account connections on all paid plans and customizable reply rate per plan (10% to 65%). Warmbox differentiates itself through automated email warmup with ai-powered interactions and customizable warmup recipes and strategies.
TrulyInbox offers a lower entry point at $0/mo compared to Warmbox at $19/mo.
If your priority is building sender reputation and improving inbox placement, both tools can deliver. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
TrulyInbox is 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.
Warmbox is AI-powered email warmup tool that automates inbox warming with customizable recipes, spam score monitoring, and detailed analytics dashboards to improve cold email deliverability.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
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
Warmbox Pricing (as of February 2026)
| Plan | Price | Emails |
|---|---|---|
| Solo | $19/mo | 50 warmup emails/day |
| Start-up | $79/mo | 250 warmup emails/day |
| Growth | $159/mo | 500 warmup emails/day |
| Enterprise | Contact Sales | - |
Source: Warmbox Pricing
Pricing Analysis
TrulyInbox is more affordable at the entry level ($0/mo vs $19/mo). For teams with tight budgets or those just getting started with email domain warming and deliverability, this price difference matters.
TrulyInbox offers 5 pricing tiers compared to Warmbox's 4, giving you more granularity as you scale.
TrulyInbox includes a free tier, letting you test the platform before committing financially.
Features Breakdown
TrulyInbox Key Features
- 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
Warmbox Key Features
- Automated email warmup with AI-powered interactions
- Customizable warmup recipes and strategies
- Spam score monitoring and blacklist checks
- Real-time analytics and reporting dashboard
- DNS checker (SPF, DKIM, DMARC)
- Multi-inbox support within a single account
- Auto-reply, open, and favorite marking simulation
- Team collaboration with per-plan member limits
Unique to TrulyInbox
- 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
Unique to Warmbox
- Automated email warmup with AI-powered interactions
- Customizable warmup recipes and strategies
- Spam score monitoring and blacklist checks
- Real-time analytics and reporting dashboard
- DNS checker (SPF, DKIM, DMARC)
- Multi-inbox support within a single account
- Auto-reply, open, and favorite marking simulation
- Team collaboration with per-plan member limits
Integration Ecosystem
TrulyInbox Integrations
TrulyInbox connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, Yahoo Mail.
Warmbox Integrations
Warmbox connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo Mail, Amazon SES, SMTP, Zoho Mail.
Shared Integrations
Both tools integrate with: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, Yahoo Mail.
Warmbox exclusively offers: Amazon SES.
Use Case Recommendations
Best Fit for TrulyInbox
- Budget-conscious teams looking for an affordable email warmup tool
- Teams that want to start free and scale up as needs grow
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
Best Fit for Warmbox
- Budget-conscious teams looking for an affordable email warmup tool
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | TrulyInbox | Warmbox |
|---|---|---|
| Starting Price | Free | $19/mo |
| Top Tier Price | $289/mo | Contact Sales |
| Total Features Listed | 8 | 8 |
| Integrations | 7 | 8 |
| Founded | 2023 | N/A |
Getting Started Checklist
- Define your email domain warming and deliverability requirements and monthly budget
- Estimate your expected warmup email volume 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
TrulyInbox and Warmbox both serve the email domain warming and deliverability market well. TrulyInbox offers a more accessible entry point, while Warmbox starts at $19/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 February 2026. Visit TrulyInbox and Warmbox for current information.
Frequently asked questions.
Frequently asked questions- What's the main difference between TrulyInbox and Warmbox?
- TrulyInbox focuses on unlimited email account connections and customizable reply rates (10-65%), while Warmbox emphasizes AI-powered interactions with customizable warmup recipes and spam score monitoring. TrulyInbox offers a free tier starting at $0/month, whereas Warmbox begins at $19/month. Both tools aim to improve sender reputation and inbox placement, but TrulyInbox provides more pricing flexibility with five tiers compared to Warmbox's four tiers.
- How much does email warmup software cost?
- TrulyInbox offers a free plan with 10 warmup emails per day, with paid plans ranging from $29/month to $289/month. Warmbox starts at $19/month for 50 warmup emails daily and goes up to $159/month for 500 emails, with enterprise pricing available through sales contact. The entry-level cost difference of $0 versus $19 makes TrulyInbox more accessible for teams testing email warmup strategies before committing to paid plans.
- Which email providers work with TrulyInbox and Warmbox?
- Both platforms integrate with Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, and Yahoo Mail. Warmbox offers one additional integration with Amazon SES, giving it 8 total integrations compared to TrulyInbox's 7. This overlap means most teams using standard email providers will find both tools compatible with their existing infrastructure.
- Should I choose TrulyInbox or Warmbox for my cold email campaign?
- Choose TrulyInbox if you need unlimited email account connections, want to start with a free tier, or require granular pricing options as you scale. Choose Warmbox if you value AI-powered interactions, need DNS checking tools (SPF, DKIM, DMARC), require Amazon SES integration, or want customizable warmup recipes. Budget-conscious teams benefit from TrulyInbox's $0 starting point, while teams needing advanced monitoring may prefer Warmbox's spam score tracking and blacklist checks.
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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