Outplay vs Warmup Inbox: Cold Email Platform vs Email Warmup Tool Comparison
Compare Outplay (cold email platform) and Warmup Inbox (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Outplay is a multi-channel cold email and sales engagement platform, while Warmup Inbox is a dedicated email warmup tool that builds sender reputation through a network of more than 30,000 real inboxes. Outplay starts free at $0/mo with five pricing tiers, and Warmup Inbox starts at $19/mo with four tiers. Many teams run both tools together rather than choosing one over the other.
Key takeaways
- Outplay offers a free plan at $0/mo, while Warmup Inbox's entry-level Basic plan costs $19/mo.
- Warmup Inbox exchanges natural-looking email with a network of more than 30,000 real inboxes to build sender reputation automatically.
- Outplay has five pricing tiers (Free, Starter $39/mo, Growth $89/mo, Enterprise $139/mo, AI SDR $99/mo), while Warmup Inbox has four tiers (Basic, Pro, Max, and a custom agency plan starting at 15 inboxes).
- Warmup Inbox's Max plan sends up to 1,000 warmup messages per day per inbox, compared to 75 per day on the Basic plan.
- Outplay integrates with Salesforce, HubSpot, Pipedrive, and Microsoft Dynamics 365, while Warmup Inbox integrates with email infrastructure tools like Amazon SES, Mailgun, SendGrid, and Sendinblue (Brevo).
Reviewed and updated September 2, 2026
Outplay vs Warmup Inbox: Cold Email Platform vs Email Warmup Tool Comparison
Outplay (cold email platform) and Warmup Inbox (email warmup tool) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
Outplay is a cold email platform for cold email outreach; Warmup Inbox is an email warmup tool for email domain warming and deliverability. By each vendor's own wording, Outplay lists multi-channel outreach (email, phone, linkedin, sms, chat) and ai sequence writer, and Warmup Inbox lists email warmup and cold email sequence.
Outplay offers a lower entry point at $0/mo compared to Warmup Inbox at $19/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Outplay is the one built for it; for building sender reputation and improving inbox placement, that is Warmup Inbox. Many teams run one of each.
Understanding the Core Difference
Outplay is Multi-channel sales engagement platform with email sequences, dialer, LinkedIn automation, conversation intelligence, and AI SDR capabilities.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free
Basic
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
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
Outplay is more affordable at the entry level ($0/mo vs $19/mo). For teams with tight budgets or those just getting started with cold email outreach and email domain warming and deliverability, this price difference matters.
Outplay offers 5 pricing tiers compared to Warmup Inbox's 4, giving you more granularity as you scale.
Outplay includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- 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
- Email warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- and 3 more listed below
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
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
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 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
Listed only by Warmup Inbox
- 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
Integration Ecosystem
Outplay Integrations
Outplay connects with: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics 365, Gmail, Outlook, Zapier, Slack, Calendly.
Warmup Inbox Integrations
Warmup Inbox connects with: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Integrations listed only by Outplay: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics 365, Gmail, Outlook, Zapier, Slack, Calendly.
Integrations listed only by Warmup Inbox: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Use Case Recommendations
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
Best Fit for Warmup Inbox
- 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 | Outplay | Warmup Inbox |
|---|---|---|
| Starting Price | Free | $19/mo |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 10 | 9 |
| Integrations | 9 | 8 |
| Founded | 2019 | N/A |
Getting Started Checklist
- Define your cold email outreach and email domain warming and deliverability requirements and monthly budget
- Estimate your expected email sending volume and 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
Outplay serves the cold email outreach side of an outbound stack and Warmup Inbox the email domain warming and deliverability side. Outplay offers a more accessible entry point, 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 Outplay and Warmup Inbox for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Outplay and Warmup Inbox?
- Outplay is a multi-channel cold email and sales engagement platform with email sequences, a dialer, LinkedIn automation, and AI SDR capabilities. Warmup Inbox is an email warmup service focused on building sender reputation and inbox placement by exchanging natural-looking email with a network of real inboxes. They solve different parts of the outbound workflow.
- Which one is cheaper, Outplay or Warmup Inbox?
- Outplay has a lower entry point, offering a free plan at $0/mo, while Warmup Inbox's cheapest plan, Basic, costs $19/mo. Outplay also has five pricing tiers total compared to Warmup Inbox's four, giving more granularity as teams scale.
- Can I use both Outplay and Warmup Inbox together?
- Yes, many teams run both tools in the same outbound stack. Outplay handles sending campaigns and generating replies, while Warmup Inbox works alongside it to build sender reputation and improve inbox placement, since the two tools address different jobs rather than competing directly.
- What integrations does Warmup Inbox support?
- Warmup Inbox integrates with Gmail and Workspace, Outlook and Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), and any inbox using SMTP. This focus on email infrastructure providers reflects its role as a deliverability and warmup tool rather than a full sales platform.
- How many inboxes does Warmup Inbox use to build sender reputation?
- Warmup Inbox exchanges natural-looking email with a network of more than 30,000 real inboxes to build sender reputation automatically. It also offers cold email sequences, language warmup, ESP warmup, and IP warmup from the same dashboard.
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.
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.
Enginy vs Success.ai: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Enginy (sales engagement platform) and Success.ai (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Artisan vs Yet Another Mail Merge: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Artisan (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.
Hexospark vs JustCall: Cold Email Platform vs Sales Engagement Platform Comparison
Compare Hexospark (cold email platform) and JustCall (sales engagement platform). See pricing, features, and integrations to decide which one, or both, your stack needs.
EmailBison vs Emelia: Cold Email Platform Comparison
Compare EmailBison and Emelia side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.