Mailwarm vs Outplay: Email Warmup Tool vs Cold Email Platform Comparison
Compare Mailwarm (email warmup tool) and Outplay (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailwarm and Outplay serve different parts of an outbound workflow, not the same job. Mailwarm is an email warmup tool for domain warming and deliverability, starting at $79/mo. Outplay is a multi-channel cold email platform starting free. Teams focused on inbox placement need Mailwarm, teams focused on sending campaigns need Outplay, and many teams use both together.
Key takeaways
- Mailwarm's Starter plan costs $79/mo and covers one mailbox or SMTP to warm with up to 50 warmup emails per day.
- Outplay offers a free plan that includes 2,000 active prospects per month with unlimited emails.
- Outplay has 5 pricing tiers (Free, Starter at $39/mo, Growth at $89/mo, Enterprise at $139/mo, and AI SDR at $99/mo) compared to Mailwarm's 4 tiers.
- Mailwarm and Outplay share only two listed integrations, Gmail and Outlook, while each platform lists several others exclusively.
- Outplay lists multi-channel outreach across email, phone, LinkedIn, SMS, and chat, plus an AI sequence writer, while Mailwarm lists spam score monitoring and blacklist detection across major databases.
Reviewed and updated September 2, 2026
Mailwarm vs Outplay: Email Warmup Tool vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh Mailwarm, an email warmup tool for email domain warming and deliverability, against Outplay, 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
Mailwarm is an email warmup tool for email domain warming and deliverability; Outplay is a cold email platform for cold email outreach. By each vendor's own wording, Mailwarm lists b2b & b2c warm up and spam score monitoring, and Outplay lists multi-channel outreach (email, phone, linkedin, sms, chat) and ai sequence writer.
Outplay offers a lower entry point at $0/mo compared to Mailwarm at $79/mo.
If your priority is building sender reputation and improving inbox placement, Mailwarm is the one built for it; for sending campaigns that land in the inbox and generate replies, that is Outplay. Many teams run one of each.
Understanding the Core Difference
Mailwarm is Email warmup and deliverability platform that generates engagement across a network of aged real inboxes and includes a deliverability expert on every plan. Each interaction produces several positive signals, such as marking as non-spam, opening, marking as important and replying.
Outplay is Multi-channel sales engagement platform with email sequences, dialer, LinkedIn automation, conversation intelligence, and AI SDR capabilities.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Free
Mailwarm Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $79/mo | 1 mailbox/SMTP to warm; 1 user | Up to 50 warmup emails/day |
| Growth | $189/mo | 3 mailboxes/SMTPs to warm; 2 users | Up to 200 warmup emails/day |
| Scale | $549/mo | 10 mailboxes/SMTPs to warm; 5 users | Up to 500 warmup emails/day |
| Tailored Plan | Contact Sales | unlimited mailboxes, users | unlimited warmup emails, and replies |
Source: Mailwarm Pricing
Outplay Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 2000 Active Prospects per month | Unlimited |
| Starter | $39/mo | 5,000 active prospects/month | Unlimited |
| Growth | $89/mo | Unlimited | Unlimited |
| Enterprise | $139/mo | Unlimited | Unlimited |
| AI SDR | $99/mo | 1,000+ active prospects | Unlimited |
Source: Outplay Pricing
Pricing Analysis
Outplay offers the lower entry point ($0/mo vs $79/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Outplay offers 5 pricing tiers compared to Mailwarm's 4, giving you more granularity as you scale.
Outplay includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- and 3 more listed below
- Multi-channel outreach (email, phone, LinkedIn, SMS, chat)
- AI sequence writer
- Conversation intelligence
- Power dialer with auto voicemail drop
- Website visitor tracking
- A/B testing
- and 4 more listed below
Mailwarm Key Features
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
Outplay Key Features
- Multi-channel outreach (email, phone, LinkedIn, SMS, chat)
- AI sequence writer
- Conversation intelligence
- Power dialer with auto voicemail drop
- Website visitor tracking
- A/B testing
- Auto email rotation
- Spintax support
- AI objection handling
- Chrome extension
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 Mailwarm
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
Listed only by Outplay
- Multi-channel outreach (email, phone, LinkedIn, SMS, chat)
- AI sequence writer
- Conversation intelligence
- Power dialer with auto voicemail drop
- Website visitor tracking
- A/B testing
- Auto email rotation
- Spintax support
- AI objection handling
- Chrome extension
Integration Ecosystem
Mailwarm Integrations
Mailwarm connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, Custom SMTP.
Outplay Integrations
Outplay connects with: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics 365, Gmail, Outlook, Zapier, Slack, Calendly.
Shared Integrations
Both tools integrate with: Gmail, Outlook.
Integrations listed only by Mailwarm: Google Workspace, Microsoft 365, Yahoo, Custom SMTP.
Integrations listed only by Outplay: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics 365, Zapier, Slack, Calendly.
Use Case Recommendations
Best Fit for Mailwarm
- Enterprise buyers who prefer custom pricing and dedicated support
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
- Agencies managing warmup across multiple client domains
Best Fit for Outplay
- 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 | Mailwarm | Outplay |
|---|---|---|
| Starting Price | $79/mo | Free |
| Top Tier Price | Contact Sales | $99/mo |
| Total Features Listed | 9 | 10 |
| Integrations | 6 | 9 |
| Founded | N/A | 2019 |
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
Mailwarm serves the email domain warming and deliverability side of an outbound stack and Outplay the cold email outreach side. Outplay offers a more accessible entry point, while Mailwarm starts at $79/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 Mailwarm and Outplay for current information.
Frequently asked questions.
Frequently asked questions- What is the difference between Mailwarm and Outplay?
- Mailwarm is an email warmup tool built for email domain warming and deliverability, while Outplay is a cold email platform built for multi-channel cold outreach. Mailwarm focuses on building sender reputation and inbox placement, while Outplay focuses on sending campaigns and generating replies across email, phone, LinkedIn, SMS, and chat.
- How much does Mailwarm cost compared to Outplay?
- Mailwarm's entry plan, Starter, costs $79/mo, while Outplay's entry plan is free. Outplay's paid tiers include Starter at $39/mo, Growth at $89/mo, Enterprise at $139/mo, and AI SDR at $99/mo, while Mailwarm's other tiers are Growth at $189/mo and Scale at $549/mo.
- Can I use Mailwarm and Outplay together?
- Yes, the article notes that many teams run one of each. Mailwarm handles warming up mailboxes and monitoring deliverability, while Outplay handles sending and managing the actual outreach sequences, so they cover different parts of the same outbound workflow rather than competing directly.
- What integrations do Mailwarm and Outplay support?
- Mailwarm connects with Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, and Custom SMTP. Outplay connects with Salesforce, HubSpot, Pipedrive, Microsoft Dynamics 365, Gmail, Outlook, Zapier, Slack, and Calendly. The two tools share only Gmail and Outlook as common integrations.
- Does Outplay have a free plan?
- Yes, Outplay offers a Free plan that includes 2,000 active prospects per month with unlimited emails. Mailwarm does not offer a free tier, with its lowest plan, Starter, priced at $79/mo for one mailbox or SMTP to warm.
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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