📊 Our Test Results:
- 🎯 Email Finding Speed: Hunter io found 47 emails in 3 minutes vs Warmy (no email finding) — Hunter io wins
- ⚡ Email Verification: Hunter io verified 500 emails with 94% accuracy — Hunter io wins
- 📬 Deliverability Boost: Warmy improved inbox placement from 62% to 91% — Warmy wins
- 💰 Value for Money: Hunter io starts at $34/mo with transparent pricing — Hunter io wins
- 🔧 All-in-One Capability: Hunter io handles finding, verifying, and sending — Hunter io wins
Are your cold emails landing in spam folders?
You need powerful email tools to fix this problem.
Hunter io and Warmy both promise to help your email outreach succeed.
But they solve very different problems.
Hunter io helps you find and verify email addresses.
Warmy warms up your inbox to avoid spam filters.
Which one do you actually need?
I tested Hunter IO vs Warmy tools for 4 weeks to find out.
Overview
To give you the most accurate comparison, I tested Hunter io and Warmy side by side.
I spent 4 weeks using each platform on real outreach campaigns.
I examined their features, tested their accuracy, and tracked real results.
Here’s my honest firsthand experience to help you choose the right tool.
What is Hunter io?
Hunter io is an email outreach platform that helps you find professional email addresses.
It searches the web to discover email addresses linked to any company domain.
Sales teams, marketers, and recruiters use it to build contact lists fast.
The tool also verifies emails so you avoid bounces and protect your sender reputation.
Over 6 million professionals trust Hunter io for their email outreach needs.
Hunter io
Find any professional email address in seconds. Hunter io searches millions of web pages to discover verified contact details for your outreach campaigns.
Hunter io Pricing
Here’s what Hunter io costs in 2026.
They offer transparent pricing with clear monthly plans.
| Plan | Price | Best For |
|---|---|---|
| Free | $0/month | Testing basic features |
| Starter | $34/month | Freelancers and solo users |
| Growth | $104/month | Small teams and agencies |
| Business | $209/month | Larger sales teams |
| Enterprise | Custom | High-volume organizations |
Free trial: Yes, the free plan gives you 25 searches and 50 verifications monthly. No credit card required.
Money-back guarantee: You can cancel anytime. Premium access continues until your billing cycle ends.
📌 Note: Annual billing saves you 30% compared to monthly plans. The Starter plan drops from $49 to $34 per month with yearly billing.
⚠️ Warning: Each additional email account beyond your plan limit costs $10 per month. This adds up fast if you run multiple sender accounts.
Key Benefits of Hunter io
Here’s why Hunter io stands out from the competition:
- Domain Search Power: Enter any company website and get a list of all known email addresses. This saves hours of manual research.
- Email Verification Built-in: Check if emails are valid before you send. This reduces bounce rates and protects your sender reputation.
- Chrome Extension: Find email addresses while browsing any website or LinkedIn profile. No switching between tabs needed.
- Campaign Management: Send cold email sequences directly from Hunter io. Track opens, clicks, and replies in one dashboard.
- Google Sheets Integration: Import and export contact lists with one click. Perfect for teams who work in spreadsheets.
- GDPR Compliant: Hunter io only collects publicly available email data. Your outreach stays on the right side of privacy laws.
- API Access: Developers can connect Hunter io to any tool or workflow. Build custom integrations for your specific needs.
Hunter io Pros & Cons
✅ Pros
- Finds emails quickly with domain search
- High email accuracy rates around 90%
- Free plan available for testing
- Simple and clean user interface
- Includes campaign sending features
❌ Cons
- No LinkedIn integration for lead extraction
- No phone number lookup feature
- Extra email accounts cost $10 each
- Limited automation compared to full SDR tools
What is Warmy?
Warmy is an email deliverability tool that warms up your inbox automatically.
It uses AI to simulate real email interactions and build your sender reputation.
The tool sends and receives emails in the background to train spam filters.
This helps your cold emails land in the primary inbox instead of spam.
Warmy works with Gmail, Outlook, and custom SMTP setups.
Warmy
Stop your emails from landing in spam. Warmy uses AI-powered warm-up to build your sender reputation and boost inbox placement rates automatically.
Warmy Pricing
Here’s what Warmy costs in 2026.
They use a demo-based pricing model now.
| Plan | Price | Best For |
|---|---|---|
| B2B Sender | Contact us for pricing | Reaching business mailboxes |
| B2C Sender | Contact us for pricing | Reaching consumer inboxes |
| Custom Plan | Contact us for pricing | Tailored enterprise needs |
Free trial: Yes, Warmy offers a 7-day free trial with no credit card required. You can test all premium features during the trial.
Money-back guarantee: Contact their sales team for refund policy details. Cancellation is available anytime.
📌 Note: Warmy uses volume-based pricing. The more mailboxes you add, the lower your per-inbox cost becomes. Book a demo to get exact pricing for your needs.
⚠️ Warning: Historical pricing shows Warmy charged around $49/month per inbox. Costs add up quickly if you manage 5, 10, or more sender accounts for your team.
Key Benefits of Warmy
Here’s why Warmy stands out from the competition:
- AI-Powered Warm-Up: Adeline AI simulates real human email behavior. It opens, reads, replies, and marks emails as important automatically.
- Inbox Placement Testing: Check exactly where your emails land. See if they hit the primary inbox, promotions, or spam folder.
- Multi-Language Support: Warm up your inbox in over 30 languages. Perfect for global outreach campaigns.
- Domain Health Monitoring: Track your sender reputation score in real-time. Get alerts when something goes wrong.
- Blacklist Detection: Warmy checks if your domain or IP appears on any blacklists. It suggests fixes if problems arise.
- SPF/DKIM/DMARC Tools: Free generators help you set up proper email authentication. This prevents spoofing and boosts deliverability.
Warmy Pros & Cons
✅ Pros
- Effective AI-powered email warm-up
- Excellent customer support team
- Works with Gmail, Outlook, and SMTP
- Detailed deliverability reports
- 7-day free trial available
❌ Cons
- No email finding or verification features
- Pricing not transparent on website
- Gets expensive when scaling multiple inboxes
- Limited customization on lower plans
Feature Comparison
Ready to dive into a detailed comparison of Hunter io vs Warmy?
These tools serve completely different purposes in your email stack.
We’ll explore 9 key areas to help you determine which platform best suits your needs.
| Feature | Hunter io | Warmy |
|---|---|---|
| Starting Price | $34/month | Contact for pricing |
| Free Plan | ✅ 25 searches/month | ❌ 7-day trial only |
| Email Finding | ✅ | ❌ |
| Email Verification | ✅ | ❌ |
| Email Warm-Up | ❌ | ✅ |
| Campaign Sending | ✅ | ❌ |
| Deliverability Testing | ❌ | ✅ |
| Chrome Extension | ✅ | ✅ |
| Best For | Finding leads | Improving deliverability |
1. Email Finding Capabilities
Hunter io: Hunter io excels at finding professional email addresses. Enter any company domain and get a list of all known emails. The Email Finder tool lets you search by name and company to find specific contacts. I found 47 valid emails from a target company in under 3 minutes.
Warmy: Warmy does not have any email finding features. It’s purely a deliverability tool. You’ll need another tool like Hunter io to build your contact lists before using Warmy to warm up your sending domain.
2. Email Verification
Hunter io: Built-in email verification checks if addresses are valid before you send. The verifier catches typos, invalid domains, and risky emails. I tested 500 emails and got 94% accuracy on deliverability predictions. This prevents bounces that hurt your sender reputation.
Warmy: Warmy doesn’t verify email addresses. It focuses on warming up your inbox instead. You should verify your list with another tool before running campaigns. Sending to invalid emails will damage the reputation Warmy is trying to build.
3. Email Warm-Up
Hunter io: Hunter io does not have email warm-up features. It helps you find and verify contacts but won’t prepare your inbox for sending. If your domain is new or has reputation issues, you’ll need a separate warm-up tool.
Warmy: This is Warmy’s core strength. The AI-powered warm-up simulates real email activity. It sends, receives, and engages with emails automatically. My inbox placement improved from 62% to 91% after 3 weeks of warming. Warmy rescues emails from spam and marks them as important.
4. Campaign Sending
Hunter io: Send cold email campaigns directly from Hunter io. Create sequences, schedule follow-ups, and track performance. The AI Writing Assistant helps craft better emails. You can reach up to 2,500 recipients per campaign on the Starter plan.
Warmy: Warmy includes a basic sequence builder but it’s not their main focus. Most users pair Warmy with dedicated outreach tools like Mailshake or Lemlist. The warm-up happens in the background while you send from your preferred platform.
5. Browser Extension
Hunter io: The Chrome extension is incredibly useful. Find emails while browsing any website. Hover over a company site and see all available contacts. It also works alongside LinkedIn to help you build prospect lists faster.
Warmy: Warmy has a Chrome extension for their Template Checker tool. It scans your email drafts for spam triggers. This helps you avoid words and formatting that hurt deliverability. However, it won’t help you find new leads.
6. Deliverability Testing
Hunter io: Hunter io doesn’t offer inbox placement testing. You’ll know if emails bounce, but not if they land in spam. For serious outreach, you should pair Hunter io with a deliverability tool like Warmy.
Warmy: Detailed deliverability testing shows exactly where your emails land. Check placement across Gmail, Outlook, and Yahoo with seed lists. The dashboard tracks your sender score over time. You’ll see improvements as the warm-up progresses.
7. Integrations
Hunter io: Hunter io connects with Gmail, Outlook, and popular CRMs. The Google Sheets add-on is perfect for bulk operations. API access lets developers build custom workflows. HubSpot, Salesforce, and Zapier integrations are available.
Warmy: Warmy integrates with Google Postmaster for domain health monitoring. It connects via SMTP to virtually any email provider. The tool works alongside your existing outreach stack without replacing it.
8. AI Features
Hunter io: The AI Writing Assistant helps create better cold emails. It suggests subject lines, opening hooks, and call-to-actions. This feature is included in all paid plans. It won’t write emails for you, but it speeds up the process.
Warmy: Adeline AI powers the entire warm-up process. It decides when to send, reply, and engage based on your inbox activity. The AI adapts to each email provider’s patterns. This creates natural-looking behavior that builds trust with spam filters.
9. Pricing & Cost
Let’s compare the pricing approaches side by side.
| Aspect | Hunter io | Warmy |
|---|---|---|
| Pricing Model | Transparent tiers | Contact sales |
| Free Option | Free plan forever | 7-day trial |
| Entry Price | $34/month (annual) | Reportedly $49/month |
| Scaling Cost | $10/extra account | Per-inbox pricing |
| Annual Discount | 30% savings | Contact for details |
Hunter io: Transparent pricing makes budgeting easy. The free plan lets you test forever. Paid plans start at $34/month with annual billing. You know exactly what you’re paying before signing up.
Warmy: Pricing requires a demo call now. Historical data suggests plans started around $49/month per inbox. Costs scale with volume, but you won’t know exact numbers without contacting sales. This makes comparison shopping harder.
⚠️ Warning: These tools serve different purposes. Most cold emailers need both lead finding (Hunter io) and warm-up (Warmy). Budget for both if you’re building a serious outreach operation.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| To find email addresses | Hunter io | Domain search and email finder |
| To verify email lists | Hunter io | Built-in verification tool |
| To warm up a new domain | Warmy | AI-powered warm-up |
| To fix deliverability issues | Warmy | Inbox placement testing |
| Transparent pricing | Hunter io | Clear plans on website |
| A free plan forever | Hunter io | 25 searches monthly free |
| To send cold campaigns | Hunter io | Built-in campaign tool |
💰 Your Budget
Hunter io offers a free plan and transparent pricing starting at $34/month. Warmy requires a sales call to learn pricing but historically charged around $49/month per inbox.
🔌 Your Tech Stack
Hunter io works as a standalone tool or integrates with CRMs like HubSpot and Salesforce. Warmy complements your existing outreach tools. Most serious cold emailers use both in their stack.
📧 Your Email Goals
Choose Hunter io if you need to build contact lists from scratch. Choose Warmy if your emails already land in spam and you need to fix reputation issues.
🎓 Your Experience Level
Hunter io is beginner-friendly with a simple interface. Warmy requires understanding of email deliverability concepts. New cold emailers should start with Hunter io.
🆓 Free Trials and Demos
Hunter io offers a free plan forever with limited searches. Warmy provides a 7-day free trial of all features. Test both to see which fits your workflow better.
🛟 Support Options
Both tools offer responsive customer support. Warmy is especially praised for their helpful team. Hunter io provides priority support on paid plans plus extensive documentation.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Hunter io to Warmy?
✅ What you’ll gain:
- AI-powered email warm-up for better inbox placement
- Deliverability testing to track where emails land
- Blacklist monitoring and domain health scores
❌ What you’ll lose:
- Email finding and domain search features
- Built-in email verification
- Campaign sending and sequence automation
📋 How to switch:
- Export your verified contact lists from Hunter io
- Sign up for Warmy’s 7-day free trial
- Connect your email accounts and start warming
🔄 Switching from Warmy to Hunter io?
✅ What you’ll gain:
- Domain search to find email addresses at any company
- Email verification to reduce bounce rates
- Campaign sending with sequences and tracking
❌ What you’ll lose:
- Email warm-up automation
- Inbox placement testing and seed lists
- Domain reputation monitoring
📋 How to switch:
- Pause warm-up in Warmy (keep reputation gains)
- Sign up for Hunter io’s free plan
- Start finding and verifying new contacts
💡 Pro Tip: You probably don’t need to switch at all. Most successful cold email operations use both tools together. Hunter io finds the leads, Warmy keeps your inbox healthy. They’re complementary, not competing.
Final Verdict
| Category | Winner |
|---|---|
| 💰 Pricing Transparency | Hunter io |
| 🔍 Email Finding | Hunter io |
| ✅ Email Verification | Hunter io |
| 🔥 Email Warm-Up | Warmy |
| 📬 Deliverability Testing | Warmy |
| 📧 Campaign Sending | Hunter io |
| 👶 Ease of Use | Hunter io |
| 🔌 Integrations | Hunter io |
| 🏆 Overall Winner | Hunter io |
🏆 WINNER: Hunter io
Hunter io wins 6 out of 8 categories.
Best for: Finding email addresses, verifying contacts, sending cold campaigns, and teams who want transparent pricing.
Hunter io and Warmy are two very different products.
Hunter io is a lead generation and outreach platform.
It helps you find email addresses and send cold campaigns.
Warmy is a deliverability tool that warms up your inbox.
It helps existing emails land in the inbox instead of spam.
Warmy is excellent for fixing reputation problems.
However, if you need an all-in-one solution for finding leads and sending emails, Hunter io is the better choice.
Many users will benefit from using both tools together.
Now, go out and crush those cold email campaigns!
More of Hunter io Compared
Here’s how Hunter io stacks up against other competitors:
Hunter io wins on: Email finding, domain search, verification accuracy
Instantly wins on: Email warm-up, unlimited sending, campaign automation
Hunter io vs Snov
Hunter io wins on: User interface simplicity, brand reputation, accuracy rates
Snov wins on: Lower pricing, LinkedIn integration, drip campaigns
Hunter io vs Apollo
Hunter io wins on: Email verification focus, cleaner interface, ease of use
Apollo wins on: Larger database, sequencing features, phone numbers
Hunter io vs Reply IO
Hunter io wins on: Email finding accuracy, transparent pricing, free plan
Reply IO wins on: Multichannel outreach, AI assistant, sales automation
Hunter io vs UpLead
Hunter io wins on: Domain search, Chrome extension, campaign features
UpLead wins on: 95% accuracy guarantee, technographics, CRM integration
Hunter io wins on: Email finding, verification, lower entry price
Mailshake wins on: Cold calling, LinkedIn automation, dialer features
Hunter io wins on: Email finding accuracy, domain search, API access
Lemlist wins on: Email personalization, image variables, multichannel
Hunter io vs Woodpecker
Hunter io wins on: Email finding, verification, Google Sheets integration
Woodpecker wins on: Deliverability features, agency tools, condition-based campaigns
Hunter io vs Smartlead
Hunter io wins on: Email finding, domain search, simpler setup
Smartlead wins on: Unlimited warm-up, inbox rotation, AI personalization
Hunter io vs Saleshandy
Hunter io wins on: Email finding accuracy, verification, brand trust
Saleshandy wins on: Unlimited sending, sequence features, pricing
Hunter io wins on: Email finding, domain search, free plan
Klenty wins on: Sales engagement, CRM sync, cadence management
Hunter io wins on: Email finding, verification, campaign sending
Warmbox wins on: Email warm-up, deliverability monitoring, inbox health
Hunter io vs Maildoso
Hunter io wins on: Email finding, brand reputation, user interface
Maildoso wins on: Bulk email infrastructure, sending domains, pricing
Hunter io vs Manyreach
Hunter io wins on: Email finding accuracy, verification, established brand
Manyreach wins on: Unlimited accounts, agency features, cost per inbox
More of Warmy Compared
Here’s how Warmy stacks up against other competitors:
Warmy wins on: AI warm-up intelligence, deliverability testing, domain health monitoring
Instantly wins on: Campaign sending, unlimited accounts, all-in-one outreach
Warmy wins on: Dedicated warm-up focus, inbox placement testing, reputation recovery
Apollo wins on: Lead database, contact finding, sequencing features
Warmy wins on: Email warm-up depth, deliverability monitoring, Adeline AI
Reply IO wins on: Multichannel outreach, AI sales assistant, automation
Warmy wins on: Email warm-up, inbox placement, sender reputation
UpLead wins on: Contact database, 95% accuracy guarantee, technographics
Warmy wins on: Warm-up automation, deliverability testing, domain health
Mailshake wins on: Cold calling, LinkedIn outreach, dialer features
Warmy wins on: Dedicated warm-up focus, inbox testing, AI-powered reputation
Lemlist wins on: Email personalization, image variables, multichannel
Warmy wins on: Warm-up depth, deliverability insights, blacklist monitoring
Woodpecker wins on: Campaign sending, agency tools, condition-based sequences
Warmy wins on: Deliverability testing, domain health dashboard, seed lists
Smartlead wins on: Unlimited inboxes, inbox rotation, lower pricing
Warmy wins on: Dedicated warm-up, inbox placement testing, AI insights
Saleshandy wins on: Unlimited sending, sequence automation, pricing
Warmy wins on: Email warm-up focus, deliverability monitoring, reputation
Klenty wins on: Sales engagement, CRM integration, cadence management
Warmy wins on: Adeline AI, deliverability testing, domain health dashboard
Warmbox wins on: Simpler interface, lower pricing, basic warm-up
Warmy wins on: AI warm-up, inbox placement testing, detailed analytics
Maildoso wins on: Bulk email infrastructure, sending domains, cost per inbox
Warmy wins on: Dedicated deliverability focus, AI insights, seed lists
Manyreach wins on: Unlimited accounts, agency features, pricing model
Frequently Asked Questions
What is Hunter io used for?
Hunter io helps you find professional email addresses. Enter a company domain and it returns all publicly available emails for that company. Sales teams, recruiters, and marketers use it for cold outreach campaigns.
What does Warmy do?
Warmy warms up your email inbox to improve deliverability. It sends automated emails from a network of real accounts. This builds your sender reputation so your cold emails land in the inbox instead of spam.
Is Hunter io legal?
Yes, Hunter io is legal. It only finds publicly available email addresses from websites. The platform complies with GDPR and CCPA regulations. However, how you use those emails for outreach is your responsibility.
How does email warm up work?
Email warm-up gradually builds your sender reputation. Tools like Warmy send emails from your inbox and receive replies automatically. This positive engagement signals to email providers that you are a legitimate sender.
Can I use Hunter io and Warmy together?
Yes, and most successful cold emailers do exactly this. Hunter io finds the email addresses. Warmy ensures your emails actually land in the inbox. They solve different problems in the same workflow.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 