Mailshake vs Warmy: Cold Email Platform vs Email Warmup Tool Comparison
Compare Mailshake (cold email platform) and Warmy (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailshake and Warmy solve different problems: Mailshake is a cold email platform starting at $29/mo for outreach campaigns, mail merge, and AI email writing, while Warmy is an email warmup tool with custom pricing focused on domain warming, seed lists, and deliverability monitoring. Many teams use both together rather than choosing one over the other.
Key takeaways
- Mailshake's entry plan is priced at $29 per month and includes unlimited uploaded contacts with 1,500 email sends per month.
- Mailshake offers 4 pricing tiers (Starter, Email Outreach, Sales Engagement, Agency Plan), while Warmy offers 3 tiers, all under contact-sales, volume-based pricing.
- Mailshake lists 10 total features including AI email writing, LinkedIn automation, and a VOIP dialer for US/Canada.
- Warmy lists 8 total features including Email Seed List, Google Postmaster Integration, and a dedicated deliverability expert.
- Warmy integrates with 6 platforms including Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, and Google Postmaster, compared to Mailshake's 4 integrations.
Reviewed and updated September 2, 2026
Mailshake vs Warmy: Cold Email Platform vs Email Warmup Tool Comparison
Mailshake is a cold email platform; Warmy is an email warmup tool. Whether you need one, the other, or both depends on which part of the workflow you are buying for: cold email outreach on one side, email domain warming and deliverability on the other. This guide lays out what each vendor publishes.
The Quick Answer
Mailshake 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, Mailshake lists unlimited email warmup and unlimited campaigns, and Warmy lists email warm-up and email seed list.
Mailshake publishes an entry price of $29/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, Mailshake 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
Mailshake is Sales engagement platform with email outreach, VOIP dialer, and LinkedIn automation for sales teams.
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
Starter
B2B sender
Mailshake Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $29/mo | UNLIMITED uploaded contacts | 1,500 email sends per month |
| Email Outreach | $49/mo | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
| Sales Engagement | $99/mo | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
| Agency Plan | Contact Sales | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
Source: Mailshake Pricing
Warmy Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| B2B sender | Contact Sales | Reach Businesses | Volume-based pricing |
| B2C sender | Contact Sales | Reach Consumers | Volume-based pricing |
| Custom plan | Contact Sales | Custom Solution | Volume-based pricing |
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.
Mailshake offers 4 pricing tiers compared to Warmy's 3, giving you more granularity as you scale.
Features Breakdown
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- and 4 more listed below
- Email Warm-Up
- Email Seed List
- Deliverability Insights
- Google Postmaster Integration
- Email Verification
- Warmy API
- and 2 more listed below
Mailshake Key Features
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- Unified inbox
- LinkedIn automation (Sales Engagement+)
- VOIP dialer (US/Canada unlimited)
- Lead Catcher
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 Mailshake
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- Unified inbox
- LinkedIn automation (Sales Engagement+)
- VOIP dialer (US/Canada unlimited)
- Lead Catcher
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
Mailshake Integrations
Mailshake connects with: Salesforce, Pipedrive, HubSpot, Zapier.
Warmy Integrations
Warmy connects with: Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, Google Postmaster.
Integrations listed only by Mailshake: Salesforce, Pipedrive, HubSpot, Zapier.
Integrations listed only by Warmy: Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, Google Postmaster.
Use Case Recommendations
Best Fit for Mailshake
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (10 capabilities listed)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Warmy
- Organizations with complex tech stacks needing broad integration support (6 integrations)
- 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 | Mailshake | Warmy |
|---|---|---|
| Starting Price | $29/mo | Contact Sales |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 10 | 8 |
| Integrations | 4 | 6 |
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
Mailshake serves the cold email outreach side of an outbound stack and Warmy the email domain warming and deliverability side. Mailshake publishes an entry price of $29/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 Mailshake and Warmy for current information.
Frequently asked questions.
Frequently asked questions- What is the difference between Mailshake and Warmy?
- Mailshake is a sales engagement platform built for cold email outreach, campaigns, and lead generation, while Warmy is an automated email deliverability tool that warms up domains and IPs using AI-driven automation and a network of mailboxes. They address different parts of the email workflow rather than competing directly.
- How much does Mailshake cost compared to Warmy?
- Mailshake publishes an entry price of $29 per month for its Starter plan, which includes unlimited uploaded contacts and 1,500 email sends monthly. Warmy uses custom, contact-sales pricing across all three of its tiers (B2B sender, B2C sender, Custom plan), so the two cannot be compared on list price.
- Can I use Mailshake and Warmy together?
- Yes, many teams run both tools together since they serve different functions. Mailshake handles sending cold email campaigns designed to land in the inbox and generate replies, while Warmy focuses on building sender reputation and improving inbox placement, making the two complementary rather than redundant.
- Which tool is better for improving email deliverability?
- Warmy is the tool built specifically for deliverability, offering features like email warm-up, seed lists, deliverability insights, Google Postmaster integration, and a dedicated deliverability expert. Mailshake also lists unlimited email warmup as a feature, but its core focus is cold email outreach rather than deliverability monitoring.
- What integrations does each platform support?
- Mailshake integrates with Salesforce, Pipedrive, HubSpot, and Zapier, totaling 4 integrations. Warmy integrates with Google Workspace, Microsoft 365, Gmail, Yahoo, Outlook, and Google Postmaster, totaling 6 integrations, making it a better fit for teams with more complex tech stacks.
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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