Maildoso vs Warmy: Which Wins on Deliverability in 2025?

by | Last updated Aug 13, 2025

Winner
Maildoso logo
4.8
  • Domain forwarding
  • Warm-up Filters
  • CRM
  • Great deliverability
  • Domain Management
  • Over 2000 Happy Customers
  • Paid Plans from $299/month
Runner Up
Best section img 12
3.5
  • Email Warm-up
  • Email Seed List
  • Integration With GPI
  • Warmy API
  • Adeline AI
  • Free trial available
  • Book a Demo
Fahim AI 6 2 8

Are your emails landing in spam folders?

You’re not alone…

Many folks who send emails for their business or projects face this problem.

That’s where email warm-up tools come in.

Two popular names you might have heard are Maildoso vs Warmy.

Let’s dive into which one might help your emails actually get seen.

Overview

We tried out both Maildoso and Warmy.

We sent emails using each one. 

We watched to see if the emails went to the inbox or spam.

This helped us see which tool might work better for you.

Maildoso CTA
4.8out of 5

Ready to take control of your email deliverability and skyrocket your outreach success?

Pricing: Try it now. The premium plan starts at $299/month.

Key Features:

  • Automated Warm-up
  • Master Inbox
  • Custom Tracking Domain
Warmy CTA
3.5out of 5

Boost your email deliverability and land more leads! Warmy’s data-backed warm-up strategies ensure your emails hit the inbox.

Pricing: It has a free trial. Book a demo to the owner for pricing.

Key Features:

  • Email Warm-up
  • Warmy API
  • Email Seed List

What is Maildoso?

So, Maildoso is a tool that helps you send lots of emails to people you don’t know yet.

It wants to make sure your emails actually get to them and help you connect.

Also, explore our favorite Maildoso alternatives

Maildoso Homepage

Our Take

mailmodo cta

Maildoso is a decent option for businesses looking to personalize their email outreach. However, its complexity and limited email templates may be drawbacks for some users.

Key Benefits

  • Create highly personalized email campaigns.
  • Use dynamic variables and conditional logic.
  • A/B tests your campaigns to optimize performance.
  • Track your email opens, clicks, and replies.
  • Integrates with popular CRM and sales automation tools.

Pricing

Maildoso offers a free plan and four paid plans:

  • Free: Limited features for one user.
  • Small: $99 every 3 months for 12 email accounts.
  • Starter: $299 every 3 months for 40 email accounts.
  • Growth: $999 every 3 months for 140 email accounts.
  • Pro: $2,199 every 3 months for 400 email accounts.
mailmodo pricing

Pros

  • Excellent deliverability rates
  • Unlimited email accounts
  • Built-in Email Warm-up
  • Advanced Automation
  • Great customer support

Cons

  • Potential Learning Curve
  • Limited Email Tracking
  • Limited Third-Party Integrations
  • Higher Price Point

What is Warmy?

So, what’s the deal with Warmy?

Think of it like this: it helps your new email address look trustworthy to email providers.

It sends and receives emails automatically, making your account seem active and legit.

This whole process helps your real emails land in inboxes, not spam folders.

Pretty neat, huh?

Also, explore our favorite Warmy alternatives

Our Take

Warmy CTA

Maildoso is a decent option for businesses looking to personalize their email outreach. However, its complexity and limited email templates may be drawbacks for some users.

Key Benefits

Warmy shines in a few key areas:

  • Boost your email deliverability by up to 99%.
  • See positive results in as little as 7-14 days.
  • Offers integration with over 5000+ different email providers.
  • Provides detailed reports on your email health score.
  • Allows you to manage an unlimited number of email accounts.

Pricing

Warmy offers different plans to fit various needs:

  • B2B Sender: Book a demo
  • B2C Sender: Book a demo
  • Custom Plan: Book a demo
Warmy pricing

Pros

  • It really boosts deliverability.
  • Setup is quite straightforward.
  • Reporting features are helpful.
  • Customer support is responsive.
  • It handles many email providers.

Cons

  • The entry price is a bit high.
  • It takes some time to see results.
  • More detailed analytics would be great.

Feature Comparison

Maildoso vs Warmy Feature Comparison This comparison will help you choose between Maildoso, a cold email infrastructure provider, and Warmy, a specialized email deliverability tool, to optimize your cold email campaigns.

1. Core Purpose: Infrastructure vs. Deliverability

Maildoso is a cold email infrastructure provider that offers the technical foundation for high-volume cold email outreach, including domains and mailboxes. Warmy is a dedicated email deliverability tool focused solely on the warm up process to build and maintain a good sender reputation.

  • Maildoso: A cold email infrastructure provider that automates the setup of domains and mailboxes for cold email outreach.
  • Warmy: A specialized email deliverability tool that improves email deliverability by focusing on the warm up process.

2. Email Infrastructure and Domains

Maildoso is an expert in email infrastructure, providing the ability to manage multiple domains and connect your own domains. It offers features like unlimited email inboxes and domain forwarding. Warmy works by connecting to your existing multiple email accounts and does not provide new domains.

  • Maildoso: Offers a robust email infrastructure that includes managing multiple domains, own domains, and providing unlimited email inboxes.
  • Warmy: Connects to your existing multiple email accounts and does not provide cold email infrastructure itself.

3. Email Warm-up and Volume

Both platforms offer an automated warm up process. Warmy is known for its highly specialized art automatic warm AI engine that simulates human-like interactions. Maildoso includes an automated warm up process as part of its core infrastructure to build reputation, which is essential for cold email campaigns.

  • Maildoso: Provides a high-quality, AI-driven warm up process as an integrated part of its cold email infrastructure.
  • Warmy: Uses its art automatic warm AI engine to generate positive interactions with warm up emails, with a higher capacity for sending warm up emails.

4. Deliverability Tools

Warmy offers a suite of deliverability tools and a dashboard that provides detailed analytics on inbox placement and health. Maildoso also focuses on deliverability optimization, offering tools like DNS configuration support and IP rotation as part of its cold email infrastructure provider service.

  • Maildoso: Provides a robust email infrastructure and deliverability optimization features like DNS and IP rotation.
  • Warmy: A dedicated email deliverability tool that provides deliverability tools, inbox placement tests, and a health checker.
Warmy Email Warm-Up

5. Inbox Management

Maildoso is designed for high-volume cold email campaigns and provides a master inbox to centralize all replies from your unlimited email inboxes. This is a significant feature for managing large-scale cold email outreach. Warmy does not offer a master inbox as it is a warm-up tool, not a campaign management platform.

  • Maildoso: Features a master inbox for managing replies from unlimited inboxes, which is crucial for cold email campaigns.
  • Warmy: A warm-up tool that does not include a master inbox for campaign reply management.

6. Domain Warming

Both services are vital for domain warming. Maildoso facilitates domain warming by providing authenticated domains with built-in IP reputation management. Warmy focuses on domain warming by simulating real human interactions to build trust with email providers.

  • Maildoso: Helps with domain warming by providing pre-configured and authenticated multiple domains.
  • Warmy: A tool dedicated to domain warming by sending warm up emails that build a positive sender reputation.

7. Email Marketing Campaigns

Warmy and Maildoso both support email marketing campaigns, but in different ways. Warmy ensures the deliverability of your email marketing campaigns by improving your sender reputation. Maildoso provides the email infrastructure and mailboxes needed to run those campaigns.

  • Maildoso: Provides the cold email infrastructure and mailboxes for executing email marketing campaigns.
  • Warmy: An email deliverability tool that ensures your email marketing campaigns are successful by improving email deliverability.

8. Compatibility and Multiple Accounts

Both platforms are compatible with multiple email accounts and popular email providers. However, Maildoso provides the unlimited email inboxes and multiple domains as part of its service, whereas Warmy connects to your existing accounts to perform the warm-up.

  • Maildoso: Provides unlimited email inboxes and multiple domains and lets you connect your own domains.
  • Warmy: An email deliverability tool that seamlessly connects to your multiple email accounts for the warm up process.
Warmy Email Warm-Up

9. Customer Feedback

Warmy receives consistently positive warmy reviews for its responsive and helpful customer support and its ease of use. Maildoso is also praised in reviews for its good support, especially for the technical aspects of its email infrastructure.

  • Maildoso: Known for professional support, particularly for technical email infrastructure issues.
  • Warmy: Positive warmy reviews highlight its excellent customer support and user experience.

10. Pricing and Free Tools

Warmy offers several free tools, such as a deliverability test, and a free trial. Maildoso also offers a free trial and has plans that include a large number of mailboxes and domains, making it a cost-effective cold email infrastructure provider.

  • Maildoso: A cost-effective cold email infrastructure provider with plans that include multiple domains and unlimited email inboxes.
  • Warmy: Offers free tools and a free trial for its email deliverability service.

11. Focus on Cold Email Outreach

Maildoso enables high-volume cold email outreach by providing a scalable and reliable cold email infrastructure. Warmy supports cold email outreach by ensuring a high deliverability rate, so your messages from warm up emails and regular campaigns land in the inbox and not the spam folder.

  • Warmy: A tool that supports cold email outreach by ensuring high email deliverability.
  • Maildoso: A dedicated cold email infrastructure provider that enables scalable cold email outreach.

What to Look For When Choosing a Cold Outreach Tool?

Here’s a quick checklist:

  • Sending Limits: Consider your desired emails per month.
  • Deliverability: Does it help avoid the spam folder?
  • Prospect Organization: How easy is it to manage your leads?
  • Template Options: Can you easily create and personalize emails?
  • Reply Tracking: Can you monitor engagement and roi?
  • API and Integrations: Does it connect with your other tools?
  • Interface: Is the platform easy to use and navigate?
  • Warm-up Features: Does it help improve your sender reputation?
  • Customer Support: Is help readily available if you need it?

Final Verdict (Our Pick)

So, we looked closely at Maildoso and Warmy.

Both help your emails get to the inbox, not spam.

Warmy seemed a little easier to use and had really good reports.

If seeing detailed info about your email warmup is important, Warmy is a solid choice.

Maildoso is also good, especially if you need a dedicated ip address.

For most folks just starting with cold email and wanting to improve their deliverability rates, we think Warmy has a slight edge.

We spent time testing these tools so you don’t have to. Give Warmy a try and see your email outreach get better!

More of Maildoso

Here’s a comparison of Maildoso with its alternatives in the cold outreach landscape:

  • Maildoso vs Snov IO: Maildoso prioritizes advanced email warm-up and deliverability. Snov IO offers comprehensive tools for email finding, verification, and multi-channel campaigns.
  • Maildoso vs Instantly: Maildoso focuses on robust email infrastructure and affordable warming for multiple accounts. Instantly excels in deliverability, speed, and unlimited warm-up for B2B outreach.
  • Maildoso vs Apollo: Maildoso emphasizes email deliverability and cost-effective warming. Apollo provides a vast B2B database for lead generation and sales engagement.
  • Maildoso vs Hunter IO: Maildoso facilitates robust email warm-up and cold outreach automation. Hunter IO is primarily an email finder and verifier with basic sending capabilities.
  • Maildoso vs Reply IO: Maildoso focuses on email deliverability and master inbox management. Reply IO delivers extensive multi-channel outreach, including LinkedIn automation and AI features.
  • Maildoso vs UpLead: Maildoso builds a strong email infrastructure for deliverability. UpLead is a sales intelligence platform renowned for high-quality, verified B2B contact data.
  • Maildoso vs Mailshake: Maildoso offers automated warm-up and a central inbox for account management. Mailshake provides an intuitive platform for personalized cold email and follow-up sequences.
  • Maildoso vs Lemlist: Maildoso provides advanced IP rotation for deliverability with multi-account warm-up. Lemlist specializes in hyper-personalized email campaigns using rich media and multi-channel sequences.
  • Maildoso vs Woodpecker: Maildoso offers advanced warm-up and master inbox features for email infrastructure. Woodpecker focuses on smart sending practices and strong deliverability for cold email campaigns.
  • Maildoso vs Smartlead: Maildoso provides a robust email infrastructure with a strong deliverability focus. Smartlead offers unlimited warm-up and high-volume cold email campaigns with detailed analytics.
  • Maildoso vs Saleshandy: Maildoso integrates multiple email accounts and warm-up for seamless management. Saleshandy provides automated cold email campaigns, tracking, and a B2B lead finder.
  • Maildoso vs Klenty: Maildoso focuses on improving email deliverability and warm-up. Klenty is a comprehensive sales engagement platform that integrates multi-channel outreach and CRM functionality.
  • Maildoso vs Warmbox: Maildoso includes warm-up within its broader email infrastructure platform. Warmbox is a dedicated, specialized tool focused solely on advanced email warm-up.
  • Maildoso vs Manyreach: Maildoso emphasizes cost-effective email deliverability through its master inbox. Manyreach offers flexible credit systems and a comprehensive platform for cold outreach.
  • Maildoso vs Warmy: Maildoso offers a warm-up as part of its overall email infrastructure solution. Warmy is a dedicated deliverability tool emphasizing advanced warming and reputation management.

More of Warmy

Here’s a comparison of Warmy with other outreach platforms:

  • Warmy vs Snov IO: Warmy focuses on email warm-up for inbox placement. Snov IO provides email finding, verification, and multichannel outreach tools.
  • Warmy vs Instantly: Instantly offers an all-in-one cold email platform with lead finder, unlimited accounts, and robust campaign management.
  • Warmy vs Apollo: Warmy is dedicated to optimizing email deliverability. Apollo is a sales intelligence platform with extensive lead data and outreach sequences.
  • Warmy vs Hunter IO: Warmy enhances sender reputation and email deliverability. Hunter IO primarily finds and verifies email addresses for prospecting.
  • Warmy vs Reply IO: Warmy ensures consistent email inboxing. Reply IO offers a comprehensive multi-channel sales engagement and automation platform.
  • Warmy vs UpLead: Warmy is an email warm-up and deliverability specialist. UpLead provides high-quality, verified B2B contact data for lead generation.
  • Warmy vs Mailshake: Warmy’s core is consistent email deliverability. Mailshake automates personalized cold email campaigns with tracking.
  • Warmy vs Lemlist: Warmy is specifically designed for robust email deliverability. Lemlist focuses on hyper-personalized multi-channel outreach, including rich media.
  • Warmy vs Woodpecker: Warmy enhances sender reputation and inbox placement. Woodpecker is a platform for sending safe cold email campaigns with automation.
  • Warmy vs Smartlead: Warmy is an expert in email diagnosis and deliverability enhancement. Smartlead offers comprehensive cold outreach automation for campaigns.
  • Warmy vs Saleshandy: Warmy specializes in improving email deliverability. Saleshandy provides tools for email tracking, scheduling, and personalized outreach.
  • Warmy vs Klenty: Warmy focuses on improving email sender reputation. Klenty is a sales engagement platform for automated email sequences and CRM integration.
  • Warmy vs Warmbox: Warmy offers higher warm-up volume and detailed deliverability analytics. Warmbox is a focused email warming service with a smaller capacity.
  • Warmy vs Maildoso: Warmy is a dedicated email warm-up and deliverability solution. Maildoso is a cold email infrastructure primarily for sending large volumes.
  • Warmy vs Manyreach: Warmy specializes in email warm-up and deliverability. Manyreach is a comprehensive cold outreach automation tool across channels.

Frequently Asked Questions

What is email warmup and why do I need it?

Email warmup is like exercising your email account. It slowly builds a good sending history. This helps email providers trust you so your cold email reaches inboxes, not spam folders.

Can I use Maildoso or Warmy for my Google Workspace account?

Yes, both like Maildoso and Warmy are designed to work with accounts like Google Workspace. You connect your email account to their platform to start the warmup process.

How long does it take to see results from email warmup?

It usually takes several weeks to see the full benefits of email warmup. Consistency is key. Both tools automate this process, gradually increasing sending volume over time.

Do Maildoso or Warmy guarantee better deliverability?

While neither can 100% guarantee inbox placement, both significantly improve your deliverability rates. By building trust, they reduce the chances of your email campaign landing in spam.

Is a dedicated IP address necessary for cold emailing?

A dedicated ip address can help with cold outreach deliverability, especially if you send high volumes. Maildoso offers this. Warmy focuses on the warmup process itself to improve sending reputation.

en_USEnglish