Inboxy vs Warmbox: Email Warmup Tool Comparison
Compare Inboxy and Warmbox side by side. See pricing, features, and integrations to choose the right email warmup tool for your needs.
Inboxy and Warmbox are both email warmup tools for improving deliverability, but they differ on price and structure. Warmbox starts at $19 per month across four tiers, while Inboxy offers a single $47 per month plan. Inboxy lists nine features and nine integrations, while Warmbox lists eight features and eight integrations, so the right pick depends on budget and needed capabilities.
Key takeaways
- Warmbox's entry plan, Solo, costs $19 per month for one inbox warm-up, one team member, and 50 emails per day.
- Inboxy's only listed plan, Inboxy Pro, costs $47 per month and supports Gmail and Office 365 inboxes with 120 daily emails per inbox.
- Warmbox offers four pricing tiers, Solo, Start-up, Growth, and Enterprise, compared to Inboxy's single published plan.
- Inboxy lists nine features including Domain Score IQ Monitoring and AI Generated Emails using GPT-3, none of which appear on Warmbox's feature list under that wording.
- Google Workspace is the only integration both Inboxy and Warmbox list on their own pages, while Inboxy separately lists Mailgun, GoDaddy, and Sendgrid, and Warmbox separately lists Amazon SES and Zoho Mail.
Reviewed and updated September 2, 2026
Inboxy vs Warmbox: Email Warmup Tool Comparison
Sales teams evaluating email domain warming and deliverability tools often narrow their shortlist to Inboxy and Warmbox. Both target the same job, but they cater to different workflows and budgets. This comparison covers pricing, features, and integrations so you can pick the right fit.
The Quick Answer
By each vendor's own wording, Inboxy lists primary inbox supercharger and domain score iq monitoring, while Warmbox lists automated email warmup with ai-powered interactions and customizable warmup recipes and strategies. A capability both offer can appear under different names, so read both feature lists below.
Warmbox offers a lower entry point at $19/mo compared to Inboxy at $47/mo.
If your priority is building sender reputation and improving inbox placement, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Inboxy is Email warmup tool that improves deliverability by gradually increasing sending volume and boosting domain reputation. It runs warmup through a private network of headless browsers with AI-driven adjustments to sending metrics.
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
Inboxy Pro
Solo
Inboxy Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Inboxy Pro | $47/mo | Gmail and Office 365 Inboxes | 120 Daily Emails Per Inbox |
Source: Inboxy Pricing
Warmbox Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Solo | $19/mo | 1 inbox warm-up; 1 team member | 50 emails/day |
| Start-up | $79/mo | 3 inbox warm-up; 3 team members | 250 emails/day |
| Growth | $159/mo | 6 inbox warm-up | 500 emails/day |
| Enterprise | Contact Sales | custom | custom |
Source: Warmbox Pricing
Pricing Analysis
Warmbox offers the lower entry point ($19/mo vs $47/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Warmbox offers 4 pricing tiers compared to Inboxy's 1, giving you more granularity as you scale.
Features Breakdown
- Primary Inbox Supercharger
- Domain Score IQ Monitoring
- AI Powered Inbox Adjustments
- Dynamic Email Scheduling
- Live Inbox Engagement Feed
- AI Generated Emails (GPT-3)
- and 3 more listed below
- 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
- and 2 more listed below
Inboxy Key Features
- Primary Inbox Supercharger
- Domain Score IQ Monitoring
- AI Powered Inbox Adjustments
- Dynamic Email Scheduling
- Live Inbox Engagement Feed
- AI Generated Emails (GPT-3)
- IP Warm Up Service
- SMTP Warm Up Service
- Inbox Placement Test
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
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 Inboxy
- Primary Inbox Supercharger
- Domain Score IQ Monitoring
- AI Powered Inbox Adjustments
- Dynamic Email Scheduling
- Live Inbox Engagement Feed
- AI Generated Emails (GPT-3)
- IP Warm Up Service
- SMTP Warm Up Service
- Inbox Placement Test
Listed only by 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
Inboxy Integrations
Inboxy connects with: Personal Gmail, Google Workspace, Outlook/Office (SMTP), Outlook/Office (Oauth), Mailgun, GoDaddy, Inboxroad, Sendgrid, Custom SMTP.
Warmbox Integrations
Warmbox connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo Mail, Amazon SES, SMTP, Zoho Mail.
Shared Integrations
Both tools integrate with: Google Workspace.
Integrations listed only by Inboxy: Personal Gmail, Outlook/Office (SMTP), Outlook/Office (Oauth), Mailgun, GoDaddy, Inboxroad, Sendgrid, Custom SMTP.
Integrations listed only by Warmbox: Gmail, Outlook, Microsoft 365, Yahoo Mail, Amazon SES, SMTP, Zoho Mail.
Use Case Recommendations
Best Fit for Inboxy
- Budget-conscious teams looking for an affordable email warmup tool
- Teams that need a wide feature set (9 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (9 integrations)
Best Fit for Warmbox
- Budget-conscious teams looking for an affordable email warmup tool
- Enterprise buyers who prefer custom pricing and dedicated support
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
Feature Comparison Summary
| Feature | Inboxy | Warmbox |
|---|---|---|
| Starting Price | $47/mo | $19/mo |
| Top Tier Price | $47/mo | Contact Sales |
| Total Features Listed | 9 | 8 |
| Integrations | 9 | 8 |
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
Inboxy and Warmbox both serve the email domain warming and deliverability market. Warmbox offers a more accessible entry point at $19/mo, while Inboxy starts at $47/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 Inboxy and Warmbox for current information.
Frequently asked questions.
Frequently asked questions- What is the price difference between Inboxy and Warmbox?
- Warmbox has a lower entry price at $19 per month for its Solo plan, compared to Inboxy's single published plan, Inboxy Pro, at $47 per month. Warmbox also offers three additional paid tiers, Start-up at $79 per month, Growth at $159 per month, and an Enterprise tier with custom pricing.
- Which tool has more pricing plans, Inboxy or Warmbox?
- Warmbox has more pricing plans. It offers four tiers, Solo, Start-up, Growth, and Enterprise, while Inboxy publishes only one plan, Inboxy Pro, priced at $47 per month.
- Do Inboxy and Warmbox integrate with the same email providers?
- They overlap on Google Workspace, which is the only integration both vendors list on their own pages. Beyond that, Inboxy separately lists Personal Gmail, Outlook/Office in SMTP and OAuth forms, Mailgun, GoDaddy, Inboxroad, Sendgrid, and Custom SMTP, while Warmbox separately lists Gmail, Outlook, Microsoft 365, Yahoo Mail, Amazon SES, SMTP, and Zoho Mail.
- What features does Inboxy offer that Warmbox does not list?
- Inboxy lists nine features under its own wording that do not appear on Warmbox's list, including Primary Inbox Supercharger, Domain Score IQ Monitoring, AI Powered Inbox Adjustments, Dynamic Email Scheduling, Live Inbox Engagement Feed, AI Generated Emails using GPT-3, IP Warm Up Service, SMTP Warm Up Service, and Inbox Placement Test.
- What features does Warmbox offer that Inboxy does not list?
- Warmbox lists eight features under its own wording not found on Inboxy's list, including automated email warmup with AI-powered interactions, customizable warmup recipes and strategies, spam score monitoring and blacklist checks, a real-time analytics dashboard, a DNS checker for SPF, DKIM, and DMARC, multi-inbox support, auto-reply and engagement simulation, and team collaboration with per-plan member limits.
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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