Email Warmup

Warmy.io vs Mailivery: Which Email Warm Up Tool is Right for You?

Published on
June 26, 2025
Post by
Mike Shamsuddin
Warmy.io vs Mailivery: Which Email Warm Up Tool is Right for You?

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Email deliverability is crucial for businesses that rely on email to engage customers, generate leads, or close deals. A reliable deliverability tool can make or break your success.


In this article, we’ll compare two leading tools: Mailivery and Warmy.io. By the end, you’ll have a clear understanding of which tool aligns best with your email deliverability needs.

What Is Warmy.io?

Warmy.io is a popular email warm-up tool designed to improve email deliverability by simulating interactions with emails.

With features like automated email warm-up, analytics, and an email warm-up API, Warmy.io caters to businesses looking to enhance their sender reputation and inbox placement.


It is particularly well-suited for high-volume senders, such as those looking to perform 500+ warm-up emails per day, making it a strong option for businesses with large-scale email needs.

Warmy.io Pricing: Why It Gets Expensive Fast

One of Warmy.io’s limitations is its pricing model. Warmy charges per inbox, which can become expensive as you scale.

Warmy.io pricing plans for B2B, B2C, and custom senders. Pricing hidden behind demo request.

As you can see in the image above, Warmy no longer discloses its pricing. However, here’s a screenshot of when they were still transparent about the tool’s cost:

Screenshot of Warmy.io's old pricing page showing inbox-based plans and monthly costs

Assuming their pricing hasn't changed much: If you wanted to add 6 inboxes with emails per day speed of 100, it would end up costing you $236/month at Warmy.io compared to only $79/month at Mailivery.

What Is Mailivery?

Mailivery is more than just an email warm-up tool—it’s a comprehensive email deliverability solution. By leveraging a peer-to-peer network of over 30,000 verified mailboxes, Mailivery ensures authentic email interactions to build and maintain a strong sender reputation.

With features like blacklist monitoring, real-time email health scores, and unlimited inbox connections, Mailivery empowers businesses of all sizes to achieve consistent inbox placement.

Other Key features include:

  • Blacklist Monitoring: Real-time alerts to protect domain and IP reputation.
  • Custom Warm-Up Settings: Options to adjust reply rates, ramp-up speeds, and templates.
  • Unlimited Inboxes: Scale effortlessly without added costs.
  • Proactive Quality Assurance: Daily inbox verification and removal of bad actors ensure network integrity.

Mailivery supports businesses of all sizes, providing tools that enhance email deliverability and sender reputation.

Feature Comparison: Mailivery vs. Warmy.io

Below is a side-by-side comparison of Mailivery and Warmy.io:

Feature Comparison: Mailivery vs. Warmy.io
Feature Mailivery Warmy.io
Network Quality Verified Gmail, Microsoft, Yahoo inboxes Diverse network quality
Pricing Unlimited inbox connections Per-inbox pricing
Custom Warm-Up Templates Yes Yes
Blacklist Monitoring Yes No
Daily Inbox Verification Yes Unknown
Proactive Spam Removal Yes (bad actor detection system) No
Feature Access Access to all features on all plans Restricted on lower plans
Adjustable Reply Rates Yes No
Custom Warm-Up Settings Yes (e.g., ramp-up speed adjustments) No


Why Mailivery Stands Out

  1. Unlimited Inboxes
    • Unlike Warmy.io, Mailivery allows you to connect unlimited inboxes without additional costs. This makes it scalable for businesses with multiple email accounts.
  2. Superior Network Quality
    • Mailivery’s peer-to-peer network includes over 30,000 verified mailboxes, featuring Gmail, Microsoft, and Yahoo accounts. This ensures a high-quality, reliable warm-up process.
  3. Advanced Features
    • Mailivery is expanding beyond warm-up services by introducing tools that enhance email deliverability and provide actionable insights, making it a comprehensive solution for businesses.
  4. Commitment to Quality
    • Daily inbox verification ensures that all mailboxes in the network are active, reducing the risk of hard bounces. Additionally, Mailivery’s proactive bad actor detection system identifies and removes problematic users by:
      • Monitoring engagement patterns to detect unusual behavior such as excessive marking of emails as spam.
      • Leveraging machine learning to flag and analyze accounts exhibiting suspicious activity.
      • Removing flagged accounts promptly to maintain a clean and effective peer-to-peer network.
  5. Scalable email warm-up API
    • Mailivery's API lets you warm up unlimited inboxes with a single integration

Testimonials from Mailivery Users

"Wow! Landing in the Inbox"

It's super easy to connect my email accounts and the stats that are shown are super useful. The automated reading and sorting feature has made my life so much easier and really separates Mailivery from other products. Overall it's way better than any other warming software I have used."

– Patrick G.
Review collected by and hosted on G2.com.

"Simply the best warmup email for outreach and cold email!

The simplicity of use and the way to set up everything, just add your SMTP and IMAP or use Google login that makes it even faster. It's better than their competitors and they are really focused on the warmup more than any other company!"

- Carlos P.
Review collected by and hosted on G2.com.

Conclusion: Mailivery or Warmy.io?

Infographic to help you choose between Warmy and Mailivery

When choosing between Mailivery and Warmy.io, it’s clear that Mailivery offers more value for businesses seeking a reliable and scalable email deliverability solution. With superior features, unlimited inbox connections, and a commitment to quality, Mailivery ensures your emails land where they matter most—the inbox.

Ready to improve your email deliverability? Sign up for Mailivery today!

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