Reply.io vs Warmy: Cold Email Platform vs Email Warmup Tool Comparison

Reply.io vs Warmy: Cold Email Platform vs Email Warmup Tool Comparison

Sales teams building an outbound stack often weigh Reply.io, a cold email platform for cold email outreach, against Warmy, an email warmup tool for email domain warming and deliverability. 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

Reply.io is a cold email platform for cold email outreach; Warmy is an email warmup tool for email domain warming and deliverability. By each vendor's own wording, Reply.io lists unlimited email warmup and 1 billion b2b contacts database, and Warmy lists email warm-up and email seed list.

Reply.io publishes an entry price of $59/mo; Warmy uses custom pricing, so the two cannot be compared on list price.

If your priority is sending campaigns that land in the inbox and generate replies, Reply.io is the one built for it; for building sender reputation and improving inbox placement, that is Warmy. Many teams run one of each.

Understanding the Core Difference

Reply.io is AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.

Warmy is Automated email deliverability tool that warms up domains and IPs with AI-driven automation and a network of business or consumer mailboxes. Adds Google Postmaster integration, seed lists, deliverability insights and email verification in the same platform.

The two platforms take different approaches to solving the same core challenge.

Pricing Comparison

$59/moReply.io entry plan

Email Volume

Contact SalesWarmy entry plan

B2B sender

Reply.io Pricing (as of September 2026)

Source: Reply.io Pricing

Warmy Pricing (as of September 2026)

Source: Warmy Pricing

Pricing Analysis

One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.

Reply.io offers 4 pricing tiers compared to Warmy's 3, giving you more granularity as you scale.

Features Breakdown

Reply.io lists

• Unlimited email warmup
• 1 billion B2B contacts database
• Anti-spam & deliverability suite
• LinkedIn automation (add-on)
• SMS and calls (add-on)
• AI personalization
• and 3 more listed below

Warmy lists

• Email Warm-Up
• Email Seed List
• Deliverability Insights
• Google Postmaster Integration
• Email Verification
• Warmy API
• and 2 more listed below

Reply.io Key Features

• Unlimited email warmup
• 1 billion B2B contacts database
• Anti-spam & deliverability suite
• LinkedIn automation (add-on)
• SMS and calls (add-on)
• AI personalization
• AI SDR capabilities
• Multi-workspace for agencies
• 14-day free trial

Warmy Key Features

• Email Warm-Up
• Email Seed List
• Deliverability Insights
• Google Postmaster Integration
• Email Verification
• Warmy API
• Deliverability monitor
• Dedicated deliverability expert

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 Reply.io

• Unlimited email warmup
• 1 billion B2B contacts database
• Anti-spam & deliverability suite
• LinkedIn automation (add-on)
• SMS and calls (add-on)
• AI personalization
• AI SDR capabilities
• Multi-workspace for agencies
• 14-day free trial

Listed only by Warmy

• Email Warm-Up
• Email Seed List
• Deliverability Insights
• Google Postmaster Integration
• Email Verification
• Warmy API
• Deliverability monitor
• Dedicated deliverability expert

Integration Ecosystem

Reply.io Integrations

Reply.io connects with: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.

Warmy Integrations

Warmy connects with: Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, Google Postmaster.

Integrations listed only by Reply.io: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.

Integrations listed only by Warmy: Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, Google Postmaster.

Use Case Recommendations

Best Fit for Reply.io

• Teams that need a wide feature set (9 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (9 integrations)
• Sales teams running high-volume outbound email campaigns
• Agencies managing multiple client outreach programs

Best Fit for Warmy

• 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

Feature Comparison Summary

Getting Started Checklist

1. Define your cold email outreach and email domain warming and deliverability requirements and monthly budget
2. Estimate your expected email sending volume and warmup email volume to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

Reply.io serves the cold email outreach side of an outbound stack and Warmy the email domain warming and deliverability side. Reply.io publishes an entry price of $59/mo, while Warmy uses custom pricing for its plans, so compare on features and on the quote you receive. 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 Reply.io and Warmy for current information.