Boost Inbox vs Warmup Inbox: Email Warmup Tool Comparison
Compare Boost Inbox and Warmup Inbox side by side. See pricing, features, and integrations to choose the right email warmup tool for your needs.
Boost Inbox and Warmup Inbox are both email warmup tools that build sender reputation, but Boost Inbox starts at $5/mo with 3 pricing tiers and features like fully automated warmup and status reports, while Warmup Inbox starts at $19/mo with 4 tiers and adds cold email sequences, language warmup, ESP warmup, and IP warmup.
Key takeaways
- Boost Inbox's entry plan costs $5/mo for one mailbox with 50 daily positive engagements, while Warmup Inbox's Basic plan costs $19/mo per inbox with 75 warmup messages per day.
- Boost Inbox offers 3 pricing tiers (Starter, Team, Premium) topping out at $19/mo for 8 mailboxes, while Warmup Inbox offers 4 tiers (Basic, Pro, Max, and a custom agency plan) topping out at $99/mo for 1,000 messages per day.
- Warmup Inbox lists features not found on Boost Inbox's page, including cold email sequences, language warmup, ESP warmup, IP warmup, spam and category monitoring, and a Developers API.
- Boost Inbox lists features not found on Warmup Inbox's page, including fully automated warmup, status reports, human review, premium support, and an email health checker tool.
- Both tools integrate with Amazon SES, while Boost Inbox separately connects with Gmail, GSuite, Outlook 365, Yahoo Mail, and SMTP, and Warmup Inbox separately connects with Zoho Mail, Mailgun, SendGrid, and Sendinblue (Brevo).
Reviewed and updated September 2, 2026
Boost Inbox vs Warmup Inbox: Email Warmup Tool Comparison
If you are comparing email domain warming and deliverability tools, Boost Inbox and Warmup Inbox will likely both appear on your radar. They share some surface-level similarities, but the details reveal important differences in pricing, capability, and target audience.
The Quick Answer
By each vendor's own wording, Boost Inbox lists fully automated and status reports, while Warmup Inbox lists cold email sequence and language warmup. A capability both offer can appear under different names, so read both feature lists below.
Boost Inbox offers a lower entry point at $5/mo compared to Warmup Inbox at $19/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
Boost Inbox is Email warmup service that gradually increases sending activity to build trust with email providers. It sends realistic emails from your inbox on a daily basis, keeps them out of spam, opens and bookmarks them, and replies to a portion of them to generate positive interactions.
Warmup Inbox is Email warmup service that exchanges natural-looking email with a network of more than 30,000 real inboxes to build sender reputation automatically. Also offers cold email sequences, language warmup, ESP warmup and IP warmup from the same dashboard.
Both platforms offer email warmup. Where they diverge is in their approach to pricing tiers and advanced capabilities.
Pricing Comparison
Starter
Basic
Boost Inbox Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $5/mo | 1 Mailbox For Warmup | 50 Daily Positive Engagement |
| Team | $9/mo | 3 Mailboxes For Warmup | 50 Daily Positive Engagement per mailbox |
| Premium | $19/mo | 8 Mailboxes For Warmup | 50 Daily Positive Engagement per mailbox |
Source: Boost Inbox Pricing
Warmup Inbox Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | $19/mo | per inbox | 75 warmup messages/day |
| Pro | $59/mo | per inbox | 250 warmup messages/day |
| Max | $99/mo | per inbox | 1,000 warmup messages/day |
| For agencies & teams | Contact Sales | Custom plans starting at 15 inboxes | custom |
Source: Warmup Inbox Pricing
Pricing Analysis
Boost Inbox is more affordable at the entry level ($5/mo vs $19/mo). For teams with tight budgets or those just getting started with email domain warming and deliverability, this price difference matters.
Warmup Inbox offers 4 pricing tiers compared to Boost Inbox's 3, giving you more granularity as you scale.
Features Breakdown
- Fully Automated
- Status Reports
- Human Review
- Premium Support
- Realistic emails sent from your inbox daily
- Email health checker tool
- and 1 more listed below
- Email Warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- Email reputation Check
- and 2 more listed below
Boost Inbox Key Features
- Email Warmup
- Fully Automated
- Status Reports
- Human Review
- Premium Support
- Realistic emails sent from your inbox daily
- Email health checker tool
- Inbox reputation analytics
Warmup Inbox Key Features
- Email warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- Email reputation Check
- Human-like AI generated content
- Developers API
Shared Capabilities
Both Boost Inbox and Warmup Inbox include:
- Email Warmup
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 Boost Inbox
- Fully Automated
- Status Reports
- Human Review
- Premium Support
- Realistic emails sent from your inbox daily
- Email health checker tool
- Inbox reputation analytics
Listed only by Warmup Inbox
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- Email reputation Check
- Human-like AI generated content
- Developers API
Integration Ecosystem
Boost Inbox Integrations
Boost Inbox connects with: Gmail, GSuite, Outlook 365, Yahoo Mail, Amazon SES, SMTP.
Warmup Inbox Integrations
Warmup Inbox connects with: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Shared Integrations
Both tools integrate with: Amazon SES.
Integrations listed only by Boost Inbox: Gmail, GSuite, Outlook 365, Yahoo Mail, SMTP.
Integrations listed only by Warmup Inbox: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Use Case Recommendations
Best Fit for Boost Inbox
- Budget-conscious teams looking for an affordable email warmup tool
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
- Agencies managing warmup across multiple client domains
Best Fit for Warmup Inbox
- 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 (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Boost Inbox | Warmup Inbox |
|---|---|---|
| Starting Price | $5/mo | $19/mo |
| Top Tier Price | $19/mo | Contact Sales |
| Total Features Listed | 8 | 9 |
| Integrations | 6 | 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
Boost Inbox and Warmup Inbox both serve the email domain warming and deliverability market. Boost Inbox offers a more accessible entry point at $5/mo, while Warmup Inbox 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 September 2026. Visit Boost Inbox and Warmup Inbox for current information.
Frequently asked questions.
Frequently asked questions- Which is cheaper, Boost Inbox or Warmup Inbox?
- Boost Inbox is cheaper at the entry level, starting at $5/mo compared to Warmup Inbox's $19/mo starting price. Boost Inbox's top tier is $19/mo for 8 mailboxes, while Warmup Inbox's paid tiers go up to $99/mo for 1,000 warmup messages per day, plus a custom agency plan starting at 15 inboxes.
- What features does Warmup Inbox have that Boost Inbox doesn't?
- Warmup Inbox lists cold email sequences, language warmup, ESP warmup tool, IP warmup, spam and category monitoring, email reputation check, human-like AI generated content, and a Developers API. These are listed on Warmup Inbox's own feature page but not on Boost Inbox's.
- What features does Boost Inbox have that Warmup Inbox doesn't?
- Boost Inbox lists fully automated warmup, status reports, human review, premium support, realistic emails sent from your inbox daily, an email health checker tool, and inbox reputation analytics. These appear on Boost Inbox's own feature page but not on Warmup Inbox's.
- Do Boost Inbox and Warmup Inbox integrate with the same email providers?
- They share only one confirmed overlapping integration, Amazon SES. Boost Inbox additionally connects with Gmail, GSuite, Outlook 365, Yahoo Mail, and SMTP, while Warmup Inbox additionally connects with Gmail and Workspace, Outlook and Microsoft 365, Zoho Mail, Mailgun, SendGrid, Sendinblue (Brevo), and any inbox with SMTP.
- Who should choose Boost Inbox over Warmup Inbox?
- Boost Inbox suits budget-conscious teams, teams launching new email domains for outreach, organizations recovering from deliverability issues, and agencies managing warmup across multiple client domains. Its lower entry price of $5/mo makes it accessible for teams just getting started with email warmup.
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
Connect on LinkedIn →Explore more.
Ready to scale your outreach?
We build GTM engines that book real meetings. See the receipts.
Related articles.
Growbots vs MailHeat: Cold Email Platform vs Email Warmup Tool Comparison
Compare Growbots (cold email platform) and MailHeat (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Apollo.io vs Proofy: Data Enrichment Tool Comparison
Compare Apollo.io and Proofy side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
AroundDeal vs Leadspicker: Data Enrichment Tool vs Sales Engagement Platform Comparison
Compare AroundDeal (data enrichment tool) and Leadspicker (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
AroundDeal vs Salesflare: Data Enrichment Tool vs CRM Platform Comparison
Compare AroundDeal (data enrichment tool) and Salesflare (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
GetSales.io vs Yet Another Mail Merge: Sales Engagement Platform vs Cold Email Platform Comparison
Compare GetSales.io (sales engagement platform) and Yet Another Mail Merge (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Gong vs NeverBounce: Sales Engagement Platform vs Data Enrichment Tool Comparison
Gong vs NeverBounce: what Gong's own pages say about enrichment, what NeverBounce's API returns about an address, and how each vendor prices.