Boost Inbox vs Mixmax: Email Warmup Tool vs Cold Email Platform Comparison
Compare Boost Inbox (email warmup tool) and Mixmax (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Boost Inbox is an email warmup tool that builds sender reputation and inbox placement, priced from $5/mo. Mixmax is a cold email platform for AI powered sequences, email tracking, and meeting scheduling, with a free tier and paid plans up to $105/mo. They cover different stages of outbound email, so many teams use both.
Key takeaways
- Boost Inbox's Starter plan costs $5/mo for 1 mailbox with 50 daily positive engagements.
- Mixmax offers a free tier plus paid plans priced at $34/mo, $65/mo, and $105/mo.
- Mixmax provides 5 pricing tiers compared to Boost Inbox's 3 tiers.
- Both tools integrate with Gmail, but Boost Inbox also connects with GSuite, Outlook 365, Yahoo Mail, Amazon SES, and SMTP, while Mixmax connects with Google Workspace, Salesforce, HubSpot, Pipedrive, Slack, Zoom, Calendly, and Zapier.
- Boost Inbox lists features like email warmup and inbox reputation analytics, while Mixmax lists AI powered email sequences and conversation intelligence.
Reviewed and updated September 2, 2026
Boost Inbox vs Mixmax: Email Warmup Tool vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh Boost Inbox, an email warmup tool for email domain warming and deliverability, against Mixmax, a cold email platform for cold email outreach. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Boost Inbox is an email warmup tool for email domain warming and deliverability; Mixmax is a cold email platform for cold email outreach. By each vendor's own wording, Boost Inbox lists email warmup and fully automated, and Mixmax lists ai-powered email sequences and email tracking and analytics.
Mixmax offers a lower entry point at $0/mo compared to Boost Inbox at $5/mo.
If your priority is building sender reputation and improving inbox placement, Boost Inbox is the one built for it; for sending campaigns that land in the inbox and generate replies, that is Mixmax. Many teams run one of each.
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.
Mixmax is Sales engagement platform for Gmail with AI-powered sequences, email tracking, meeting scheduling, and conversation intelligence.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Free
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
Mixmax Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 50 sequence recipients/month | 20 tracked emails |
| Inbox Copilot | $34/mo | N/A | Unlimited tracked emails |
| Meeting Copilot | $34/mo | N/A | 20 tracked emails |
| Engagement Copilot | $65/mo | 1,500 sequence recipients/month | Unlimited |
| Mixmax Suite | $105/mo | 1,500 sequence recipients/month | Unlimited |
Source: Mixmax Pricing
Pricing Analysis
Mixmax offers the lower entry point ($0/mo vs $5/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Mixmax offers 5 pricing tiers compared to Boost Inbox's 3, giving you more granularity as you scale.
Mixmax includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Email Warmup
- Fully Automated
- Status Reports
- Human Review
- Premium Support
- Realistic emails sent from your inbox daily
- and 2 more listed below
- AI-powered email sequences
- Email tracking and analytics
- Meeting scheduling (1-click)
- Conversation intelligence
- Multichannel sequences
- AI email personalization
- and 4 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
Mixmax Key Features
- AI-powered email sequences
- Email tracking and analytics
- Meeting scheduling (1-click)
- Conversation intelligence
- Multichannel sequences
- AI email personalization
- Inbox categorization and smart signals
- CRM auto-sync
- Custom branding (add-on)
- Dialer and SMS (add-on)
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
- Email Warmup
- 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 Mixmax
- AI-powered email sequences
- Email tracking and analytics
- Meeting scheduling (1-click)
- Conversation intelligence
- Multichannel sequences
- AI email personalization
- Inbox categorization and smart signals
- CRM auto-sync
- Custom branding (add-on)
- Dialer and SMS (add-on)
Integration Ecosystem
Boost Inbox Integrations
Boost Inbox connects with: Gmail, GSuite, Outlook 365, Yahoo Mail, Amazon SES, SMTP.
Mixmax Integrations
Mixmax connects with: Gmail, Google Workspace, Salesforce, HubSpot, Pipedrive, Slack, Zoom, Calendly, Zapier.
Shared Integrations
Both tools integrate with: Gmail.
Integrations listed only by Boost Inbox: GSuite, Outlook 365, Yahoo Mail, Amazon SES, SMTP.
Integrations listed only by Mixmax: Google Workspace, Salesforce, HubSpot, Pipedrive, Slack, Zoom, Calendly, Zapier.
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 Mixmax
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Teams that want to start free and scale up as needs grow
Feature Comparison Summary
| Feature | Boost Inbox | Mixmax |
|---|---|---|
| Starting Price | $5/mo | Free |
| Top Tier Price | $19/mo | $105/mo |
| Total Features Listed | 8 | 10 |
| Integrations | 6 | 9 |
| Founded | N/A | 2014 |
Getting Started Checklist
- Define your email domain warming and deliverability and cold email outreach requirements and monthly budget
- Estimate your expected warmup email volume and email sending 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 serves the email domain warming and deliverability side of an outbound stack and Mixmax the cold email outreach side. Mixmax offers a more accessible entry point, while Boost Inbox starts at $5/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 Mixmax for current information.
Frequently asked questions.
Frequently asked questions- What is the difference between Boost Inbox and Mixmax?
- Boost Inbox is an email warmup tool built for domain warming and deliverability, while Mixmax is a cold email platform built for sending sequences and tracking outreach. They address different stages of the outbound workflow, and many teams run both at once.
- How much does Boost Inbox cost?
- Boost Inbox starts at $5/mo for the Starter plan, which covers 1 mailbox for warmup with 50 daily positive engagements. The Team plan is $9/mo for 3 mailboxes, and the Premium plan is $19/mo for 8 mailboxes, each with 50 daily positive engagements per mailbox.
- How much does Mixmax cost?
- Mixmax has a free plan with 50 sequence recipients per month and 20 tracked emails. Paid tiers include Inbox Copilot and Meeting Copilot at $34/mo each, Engagement Copilot at $65/mo with 1,500 sequence recipients and unlimited tracked emails, and Mixmax Suite at $105/mo.
- Do Boost Inbox and Mixmax integrate with the same tools?
- They share only one listed integration, Gmail. Boost Inbox otherwise connects with GSuite, Outlook 365, Yahoo Mail, Amazon SES, and SMTP, while Mixmax connects with Google Workspace, Salesforce, HubSpot, Pipedrive, Slack, Zoom, Calendly, and Zapier.
- Should I use Boost Inbox or Mixmax, or both?
- Use Boost Inbox if the priority is building sender reputation and improving inbox placement, and use Mixmax for sending campaigns that land in the inbox and generate replies. The article notes that many teams run one of each since they solve different parts of the outbound process.
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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