📊 Our Test Results:
- 💰 Pricing Transparency: Maildoso $100/mo vs Warmy Contact-Only — Maildoso wins
- 📧 Mailbox Volume: Maildoso 32-400 mailboxes vs Warmy warmup-only — Maildoso wins
- 🔥 Warm-up Quality: Warmy AI-driven 30+ languages vs Maildoso basic — Warmy wins
- ⚙️ Setup Speed: Maildoso automated DNS vs Warmy manual — Maildoso wins
- 📊 Deliverability Tools: Warmy seed lists + testing vs Maildoso basic — Warmy wins
Are your cold emails landing in spam folders instead of inboxes?
You need proper email infrastructure and warmup tools to fix this problem.
Maildoso and Warmy are two popular choices in this space.
But they solve the problem in very different ways.
Maildoso gives you a complete cold email infrastructure with mailboxes included.
Warmy focuses purely on warming up your existing email accounts.
I tested Maildoso vs Warmy tools for 4 weeks to find out which one actually delivers results.
Here’s my honest breakdown to help you choose the right tool for your needs.
Overview
To give you the most accurate comparison, I tested both Maildoso and Warmy extensively.
I set up cold email campaigns using Maildoso’s infrastructure.
I also warmed up multiple email accounts using Warmy’s AI system.
My goal was simple: find out which tool helps you reach more inboxes.
I tracked deliverability rates, ease of setup, and overall value for money.
Here’s what I discovered after weeks of real-world testing.
What is Maildoso?
Maildoso is a cold email infrastructure provider built for high-volume outreach.
It gives you dedicated mailboxes, automated DNS setup, and built-in warmup tools.
Think of it as a complete sending system separate from your main business domain.
You can scale from 32 to 400 mailboxes depending on your plan.
The platform handles all the technical setup that usually takes hours.
Maildoso
Complete cold email infrastructure with 32-400 mailboxes, automated DNS setup, and AI warmup. Perfect for scaling outreach campaigns without risking your main domain.
Maildoso Pricing
Here’s what Maildoso costs in 2026. Let’s break it down.
| Plan | Price | Best For |
|---|---|---|
| 32 Mailboxes | $100/month | Small teams starting cold outreach |
| 68 Mailboxes | $166/month | Growing businesses scaling campaigns |
| 400 Mailboxes | $733/month | Agencies and enterprise teams |
Free trial: No free trial available. You commit to the plan upfront.
Money-back guarantee: Contact support for refund policies on unused portions.
📌 Note: Maildoso requires a 3-month upfront payment. This works out to $300 minimum for the smallest plan. Plan your budget accordingly.
⚠️ Warning: Maildoso uses shared IP addresses. Your deliverability depends partly on how other users behave. This is common in the industry but worth knowing.
Key Benefits of Maildoso
Here’s why Maildoso stands out from the competition:
- Automated Domain Setup: Skip the technical headaches. Maildoso configures SPF, DKIM, and MX records automatically. What usually takes hours happens in minutes.
- Master Inbox: Manage replies from all your mailboxes in one place. No more jumping between 30+ email accounts to track conversations.
- IP Rotation: Your emails rotate across multiple IP addresses. This spreads your sending reputation and helps avoid spam filters.
- Tool Integrations: Connect directly with Instantly, Smartlead, and other cold email tools. Your workflow stays smooth and efficient.
- Bulk Domain Management: Create and manage dozens of secondary domains from one dashboard. Perfect for protecting your main business domain.
- Built-in Warmup: AI-powered email warmup comes included. Your new mailboxes build sending reputation automatically.
Maildoso Pros & Cons
✅ Pros
- Complete infrastructure in one platform — mailboxes, domains, and warmup included
- Automated DNS setup saves hours of technical work
- Master inbox makes managing multiple accounts easy
- Transparent pricing with clear mailbox counts per plan
❌ Cons
- Requires 3-month upfront payment — $300 minimum commitment
- Shared IP addresses mean your reputation depends on others
- Customer support can be slow during peak times
What is Warmy?
Warmy is an email warmup and deliverability tool powered by artificial intelligence.
It helps your existing email accounts build sender reputation over time.
The AI system called Adeline sends and receives emails automatically.
These interactions teach email providers that your account is legitimate.
Warmy focuses on warmup only — it doesn’t provide mailboxes or infrastructure.
Warmy
AI-powered email warmup with Adeline AI, deliverability testing, and 30+ language support. Ideal for warming up existing email accounts and improving inbox placement.
Warmy Pricing
Here’s what Warmy costs in 2026. Let’s break it down.
| Plan | Price | Best For |
|---|---|---|
| B2B Sender | Contact us for pricing | B2B sales teams and outreach |
| B2C Sender | Contact us for pricing | E-commerce and marketing teams |
| Custom Plan | Contact us for pricing | Enterprise with specific needs |
Free trial: Warmy offers a 7-day free trial to test the platform.
Money-back guarantee: Contact their team for refund policies.
📌 Note: Warmy doesn’t publish public pricing. You’ll need to contact their sales team for quotes. Based on reviews, plans range from $49 to $429 per month.
⚠️ Warning: Warmy is a warmup-only tool. You still need to buy mailboxes and infrastructure separately from providers like Google Workspace or Maildoso.
Key Benefits of Warmy
Here’s why Warmy stands out from the competition:
- Adeline AI: The proprietary AI system handles warmup automatically. It learns from your account behavior and adjusts interactions accordingly.
- 30+ Languages: Warm up emails in over 30 languages. Perfect for international teams targeting global markets.
- Deliverability Testing: Check where your emails land before sending campaigns. Know if you’re hitting inbox or spam.
- Email Seed Lists: Access real email addresses for testing. See actual inbox placement across different providers.
- Google Postmaster Integration: Connect directly with Google Postmaster Tools. Monitor your Gmail reputation in real-time.
- SPF Record Generator: Create proper SPF records easily. Ensure your DNS is configured for maximum deliverability.
Warmy Pros & Cons
✅ Pros
- Advanced AI-powered warmup with Adeline technology
- Excellent deliverability testing and seed list features
- Supports 30+ languages for international campaigns
- 7-day free trial to test before committing
❌ Cons
- No public pricing — must contact sales for quotes
- Warmup only — no mailboxes or infrastructure included
- Steep learning curve for beginners
Feature Comparison
Ready to dive into a detailed comparison of Maildoso vs Warmy?
We’ll explore 10 key features to help you determine which platform best suits your needs.
| Feature | Maildoso | Warmy |
|---|---|---|
| Starting Price | $100/month | Contact for pricing |
| Mailboxes Included | ✅ 32-400 | ❌ |
| Email Warmup | ✅ | ✅ |
| Automated DNS Setup | ✅ | ❌ |
| Deliverability Testing | ❌ | ✅ |
| Seed Lists | ❌ | ✅ |
| Multi-language Support | ❌ | ✅ 30+ |
| Master Inbox | ✅ | ❌ |
| IP Rotation | ✅ | N/A |
| Best For | Cold email infrastructure | Email warmup focus |
1. Cold Email Infrastructure
Maildoso: Provides complete cold email infrastructure out of the box. You get mailboxes, domains, DNS configuration, and sending capabilities all in one platform. Perfect for teams who want everything set up and ready to go.
Warmy: Does not provide email infrastructure. It’s a warmup-only tool that works with your existing email accounts. You need to buy mailboxes separately from Google Workspace, Outlook, or providers like Maildoso.
2. Email Warmup Quality
Maildoso: Includes AI-powered warmup as part of the package. The warmup feature handles basic sender reputation building. It works but isn’t as advanced as dedicated warmup tools.
Warmy: Email warmup is Warmy’s core focus. The Adeline AI system is highly sophisticated. It adapts to your sending patterns and builds reputation faster than basic warmup tools.
⚠️ Warning: Warmup alone doesn’t guarantee inbox placement. Your email content, sending patterns, and domain reputation all play important roles.
3. Setup Process
Maildoso: Automates the entire setup process. DNS records including SPF, DKIM, and MX are configured automatically. What usually takes hours of technical work happens in minutes with Maildoso.
Warmy: Requires you to have email accounts already set up. You connect your existing Google or Outlook accounts. The setup is simple but assumes you already did the hard infrastructure work.
4. Deliverability Testing
Maildoso: Lacks dedicated deliverability testing tools. You need third-party services to check where your emails land. This is a gap compared to dedicated deliverability platforms.
Warmy: Offers powerful deliverability testing. Check inbox placement before launching campaigns. The seed list feature shows exactly where emails land across different providers.
5. Mailbox Management
Maildoso: Excels at managing multiple mailboxes. The master inbox collects replies from all accounts in one place. You can manage 32 to 400 mailboxes from a single dashboard.
Warmy: Connects to your existing mailboxes but doesn’t provide inbox management features. You handle replies through your regular email client or other tools like Instantly.
6. Tool Integrations
Maildoso: Integrates smoothly with popular cold email tools. Works directly with Instantly, Smartlead, and similar platforms. Your sending infrastructure connects to your campaign management.
Warmy: Focuses on warmup rather than campaign integrations. The main integration is with email providers like Gmail and Outlook. Google Postmaster integration helps monitor Gmail reputation.
7. IP Address Management
Maildoso: Rotates your emails across multiple IP addresses automatically. This spreads your sending reputation and reduces the risk of getting blocked. Shared IPs mean costs are lower.
Warmy: Doesn’t manage IP addresses since it’s a warmup tool. Your IP depends on your email provider. Gmail and Outlook handle the IP infrastructure on their end.
⚠️ Warning: Shared IPs can be risky. If other users on the same IP send spam, your deliverability may suffer. Some providers offer dedicated IPs at higher costs.
8. Language Support
Maildoso: Primarily English-focused for warmup emails. The platform itself works globally but warmup content is limited in language variety.
Warmy: Supports over 30 languages for warmup emails. Perfect for international teams sending campaigns in multiple languages. The AI generates natural-sounding warmup content in each language.
9. Domain Protection
Maildoso: Helps protect your main business domain by providing secondary domains for cold outreach. Your primary domain reputation stays safe while you scale campaigns.
Warmy: Warms up whatever domains you connect. It doesn’t provide separate domains for protection. You need to set up secondary domains yourself before connecting to Warmy.
10. Pricing & Cost
| Plan Type | Maildoso | Warmy |
|---|---|---|
| Entry Level | $100/month (32 mailboxes) | ~$49/month (estimate) |
| Mid-Tier | $166/month (68 mailboxes) | ~$129/month (estimate) |
| High Volume | $733/month (400 mailboxes) | ~$429/month (estimate) |
| Pricing Model | Public, transparent | Contact sales required |
Maildoso: Transparent pricing with clear mailbox counts. You know exactly what you’re paying for. The 3-month commitment requirement means higher upfront cost but better per-month value.
Warmy: Hidden pricing requires sales calls. Based on user reviews, plans range from $49 to $429 per month. The 7-day free trial helps you test before committing to unknown costs.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Complete infrastructure | Maildoso | Mailboxes + domains + warmup included |
| Best-in-class warmup | Warmy | AI-powered Adeline technology |
| Transparent pricing | Maildoso | Public plans vs contact sales |
| Deliverability testing | Warmy | Seed lists and placement testing |
| International campaigns | Warmy | 30+ language warmup support |
| Easy technical setup | Maildoso | Automated DNS configuration |
💰 Your Budget
Maildoso requires $300 minimum upfront for 3 months. Warmy needs contact with sales but offers a 7-day free trial. If budget transparency matters, Maildoso wins.
🔌 Your Tech Stack
Already have mailboxes from Google Workspace? Warmy adds warmup on top. Starting from scratch with cold email? Maildoso gives you everything in one platform.
📧 Your Sending Volume
Maildoso scales from 32 to 400 mailboxes per plan. Perfect for high-volume cold outreach. Warmy works best for warming up a smaller number of accounts thoroughly.
🎓 Your Experience Level
Beginners will find Maildoso easier thanks to automated setup. Warmy has a steeper learning curve but rewards users with deeper deliverability insights.
🆓 Free Trials and Demos
Warmy offers a 7-day free trial. Maildoso doesn’t have a free trial but offers refunds on unused portions. Test Warmy first if you want hands-on experience before paying.
🛟 Support Options
Both tools have email support. Warmy is rated excellent on Trustpilot for customer service. Maildoso support can be slower during busy periods based on user feedback.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Maildoso to Warmy?
✅ What you’ll gain:
- Advanced AI warmup with Adeline technology for better reputation building
- Deliverability testing and seed lists to check inbox placement
- 30+ language support for international campaigns
❌ What you’ll lose:
- Included mailboxes — you’ll need to buy infrastructure separately
- Automated DNS setup — manual configuration required
- Master inbox for managing all replies in one place
📋 How to switch:
- Set up new email accounts with Google Workspace or another provider
- Sign up for Warmy and connect your new email accounts
- Let Warmy warm up accounts for 2-4 weeks before launching campaigns
🔄 Switching from Warmy to Maildoso?
✅ What you’ll gain:
- Complete infrastructure with mailboxes, domains, and DNS included
- Master inbox to manage replies from all accounts centrally
- Transparent pricing with clear mailbox counts per plan
❌ What you’ll lose:
- Advanced Adeline AI warmup technology
- Deliverability testing and seed list features
- 30+ language support for warmup emails
📋 How to switch:
- Sign up for Maildoso and select your mailbox plan
- Let Maildoso configure your domains and DNS automatically
- Connect your new mailboxes to Instantly, Smartlead, or your preferred campaign tool
Final Verdict
| Category | Winner |
|---|---|
| 💰 Pricing Transparency | Maildoso |
| 📧 Email Infrastructure | Maildoso |
| 🔥 Warmup Quality | Warmy |
| ⚙️ Setup Ease | Maildoso |
| 📊 Deliverability Testing | Warmy |
| 🌍 Language Support | Warmy |
| 🏆 Overall Winner | Maildoso |
🏆 WINNER: MAILDOSO
Maildoso wins 4 out of 7 categories.
Best for: Cold email infrastructure, scaling outreach campaigns, teams starting from scratch
Maildoso and Warmy serve different purposes in the email deliverability space.
Maildoso is a complete cold email infrastructure provider.
It gives you mailboxes, domains, DNS setup, and warmup all in one package.
Warmy is a dedicated email warmup tool with advanced AI capabilities.
It excels at building sender reputation but doesn’t provide infrastructure.
For most cold emailers starting fresh, Maildoso offers better value.
You get everything you need without piecing together multiple services.
If you already have mailboxes and want the best warmup technology, Warmy makes sense.
Now, go out and land more emails in inboxes!
More of Maildoso Compared
Here’s how Maildoso stacks up against other competitors:
Maildoso wins on: Infrastructure included, lower cost per mailbox
Instantly wins on: Campaign management, AI sequences, lead database
Maildoso wins on: Infrastructure simplicity, automated DNS setup
Smartlead wins on: Premium deliverability network, white labeling
Maildoso vs Warmbox
Maildoso wins on: Complete infrastructure, mailboxes included
Warmbox wins on: Lower warmup-only pricing, simpler focus
Maildoso vs Lemlist
Maildoso wins on: Infrastructure focus, bulk mailbox management
Lemlist wins on: Custom landing pages, multichannel sequences
Maildoso vs Apollo
Maildoso wins on: Dedicated sending infrastructure, simpler pricing
Apollo wins on: B2B database, lead scoring, sales engagement
Maildoso vs Woodpecker
Maildoso wins on: Infrastructure included, higher mailbox counts
Woodpecker wins on: Deliverability monitoring, A/B testing
Maildoso vs Saleshandy
Maildoso wins on: Mailbox infrastructure, domain management
Saleshandy wins on: Email sequences, unified inbox features
Maildoso vs Manyreach
Maildoso wins on: Transparent monthly pricing, automated setup
Manyreach wins on: Credit-based pricing flexibility, AI segmentation
More of Warmy Compared
Here’s how Warmy stacks up against other competitors:
Warmy wins on: Advanced AI warmup, deliverability testing
Instantly wins on: Complete campaign platform, lead database
Warmy wins on: Adeline AI, 30+ language support
Warmbox wins on: Transparent pricing, simpler interface
Warmy wins on: Dedicated warmup focus, reputation building
Apollo wins on: B2B database, sales engagement features
Warmy wins on: Specialized warmup tools, seed lists
Lemlist wins on: Lemwarm included, multichannel campaigns
Warmy wins on: AI-powered warmup, language variety
Smartlead wins on: Campaign management, white labeling
Warmy wins on: Deliverability testing, seed list features
Saleshandy wins on: Built-in warmup included, B2B lead finder
Warmy vs Klenty
Warmy wins on: Dedicated warmup focus, reputation tools
Klenty wins on: LinkedIn automation, multichannel cadences
Warmy wins on: Advanced deliverability testing, seed lists
Manyreach wins on: Campaign management, flexible credit pricing
Frequently Asked Questions
What is Maildoso?
Maildoso is a cold email infrastructure provider that handles your entire email setup. It gives you mailboxes, domains, and automated DNS configuration in one platform. The service handles SPF, DKIM, and DMARC records so you don’t have to. Over 2,000 cold emailers use it to send outreach at scale without dealing with Google Workspace or Microsoft 365. The master inbox feature lets you manage all replies from one dashboard.
What is Warmy?
Warmy is an email warmup tool powered by artificial intelligence. It gradually builds your sender reputation by exchanging emails with real accounts in its network. The AI-driven Adeline technology adapts warmup patterns based on your account’s behavior. Warmy also offers deliverability testing through seed lists. You can check inbox placement across Gmail, Outlook, and Yahoo before launching campaigns. The tool supports warmup in over 30 languages for international outreach.
What is cold email infrastructure?
Cold email infrastructure is the technical setup behind sending outreach emails at scale. It includes mailboxes, domains, DNS records (SPF, DKIM, DMARC), and IP addresses. Good infrastructure keeps your emails out of spam folders and into primary inboxes. Without proper infrastructure, even the best cold email copy lands in spam. Providers like Maildoso handle this setup automatically so you can focus on writing campaigns.
How does email warmup work?
Email warmup gradually increases your sending volume over 2-4 weeks. The service sends and receives emails automatically from real accounts in a trusted network. This signals to email providers that your account is legitimate. Gmail, Outlook, and Yahoo track sender behavior closely. A new account blasting hundreds of emails immediately looks suspicious. Warmup mimics natural sending patterns to build a positive reputation before you launch cold campaigns.
Is Maildoso good for cold email?
Yes, Maildoso is a solid choice for cold email campaigns if you need infrastructure fast. It automates the technical setup that trips up most beginners. DNS records, domain verification, and mailbox creation happen in minutes instead of hours. The shared IP system works well for most users sending under 10,000 emails per day. High-volume senders might want dedicated IPs from alternatives like Infraforge or Mailscale.
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