Mailgun vs Warmy Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated May 2026 8 min read

Mailgun

0.0 (0 reviews)

Mailgun is an email delivery service providing developers with a powerful API to send, receive, and track transactional and marketing emails with high deliverability and real-time analytics.

Starting at Free
Free Trial 30 days
VS

Warmy

0.0 (0 reviews)

Warmy is an automated email warm-up tool designed to improve your sender reputation and ensure your messages land in the primary inbox rather than the spam folder.

Starting at $49/mo
Free Trial 7 days

Quick Comparison

Feature Mailgun Warmy
Website mailgun.com warmy.io
Pricing Model Subscription Subscription
Starting Price Free $49/month
FREE Trial ✓ 30 days free trial ✓ 7 days free trial
Free Plan ✘ No free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment cloud saas
Integrations WordPress Salesforce Zapier Slack Magento Shopify Google Cloud AWS Heroku Make Gmail Outlook Office 365 SendGrid Mailgun Zoho Mail Amazon SES iCloud Yahoo Mail GMX
Target Users small-business mid-market enterprise small-business mid-market solopreneur
Target Industries
Customer Count 0 0
Founded Year 2010 2020
Headquarters San Antonio, USA Tel Aviv, Israel

Overview

M

Mailgun

Mailgun is a cloud-based email delivery service designed to help you send, receive, and track emails effortlessly through a robust API or SMTP integration. Whether you are sending password resets, shipping notifications, or marketing newsletters, you can rely on its infrastructure to handle high volumes while maintaining excellent inbox placement. You can also use its powerful inbound routing to process incoming emails and turn them into structured data for your applications.

The platform focuses on technical reliability and provides you with detailed logs and analytics to troubleshoot delivery issues in real-time. You can verify email addresses before sending to reduce bounce rates and protect your sender reputation. It scales perfectly from small projects to enterprise-level applications, offering a flexible pay-as-you-go model alongside dedicated plans for high-volume senders.

strtoupper($product2['name'][0])

Warmy

Warmy is a specialized deliverability platform that automates the process of warming up your email accounts. By generating human-like interactions and gradually increasing your sending volume, it helps you build a positive reputation with major email service providers. You can connect multiple mailboxes and let the AI-driven engine handle the complex scheduling required to stay out of spam filters.

The platform provides you with detailed health scores and real-time monitoring so you always know where your deliverability stands. Whether you are a solo founder or managing a large sales team, you can use these tools to protect your domain's integrity and maximize the open rates of your outbound campaigns. It simplifies the technical hurdles of email authentication and sender reputation management.

Overview

M

Mailgun Features

  • Email Sending API Integrate email sending into your app quickly using popular languages like Python, PHP, and Java via RESTful API.
  • Inbound Routing Automatically parse incoming emails and transform them into JSON data so your application can process replies easily.
  • Email Validation Clean your mailing lists in real-time to remove invalid addresses and significantly reduce your bounce rates.
  • Deliverability Tools Optimize your inbox placement with dedicated IP addresses and automated SPF/DKIM/DMARC setup assistance.
  • Real-time Analytics Monitor your performance with detailed logs that show exactly when emails are delivered, opened, or clicked.
  • Send Time Optimization Use machine learning to deliver messages at the exact moment your recipients are most likely to engage.
strtoupper($product2['name'][0])

Warmy Features

  • AI-Powered Warm-up. Automate your email interactions with an AI engine that mimics human behavior to build trust with mailbox providers.
  • Deliverability Checker. Run instant tests to see exactly where your emails land and identify technical issues before you send campaigns.
  • Multi-Language Support. Warm up your inbox using messages in your specific target language to ensure your reputation is relevant to your region.
  • DNS Records Monitor. Track your SPF, DKIM, and DMARC settings in real-time to ensure your technical authentication remains valid and secure.
  • Template Testing. Upload your specific email templates to check their 'spamminess' score and receive suggestions for improving your content.
  • Mailbox Health Score. View a centralized dashboard that gives you a clear percentage score of your current sender reputation and domain authority.

Pricing Comparison

M

Mailgun Pricing

Trial
$0
  • 5,000 free emails per month
  • 5 days of log retention
  • SMTP relay and RESTful API
  • Webhooks for tracking
  • Basic email analytics
W

Warmy Pricing

Starter
$49
  • Up to 1,000 warm-up emails/month
  • 1 Mailbox included
  • AI-powered warm-up
  • Basic deliverability reports
  • Support for all major providers

Pros & Cons

M

Mailgun

Pros

  • Excellent documentation makes API integration straightforward for developers
  • High deliverability rates for transactional and marketing emails
  • Detailed real-time logs simplify troubleshooting delivery issues
  • Powerful inbound email parsing capabilities for apps
  • Reliable performance even during high-volume sending spikes

Cons

  • Technical interface can be intimidating for non-developers
  • Customer support response times vary on lower tiers
  • Pricing can become expensive as sending volume increases
A

Warmy

Pros

  • Very simple setup process for all major email providers
  • Detailed technical dashboard for monitoring DNS and SPF records
  • Supports warm-up in dozens of different languages
  • Helpful customer support team for troubleshooting deliverability issues

Cons

  • Higher starting price point compared to some basic competitors
  • Interface can feel data-heavy for non-technical users
  • No forever-free plan available for very small users
x

Please claim profile in order to edit product details and view analytics. Provide your work email address to receive a verification link.

x

Please login in order to edit product details and view analytics.