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Featured blog posts

Deliverability
11 min
Key takeaways from Mailgun’s State of email deliverability 2025
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Featured blog posts

Deliverability
11 min
Key takeaways from Mailgun’s State of email deliverability 2025
Read More

3 min
The European Accessibility Act: What you need to know
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12 min
Navigating global data compliance and regulations in 2025
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Product
5 min
Announcing new analytics features to maximize your email performance
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Resources
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Access free ebooks, videos, research reports, and case studies on everything you need to know about email.
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Case studies
Connected experiences start here
Discover how great companies are building great apps and email programs with Mailgun.
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Product Release: Introducing Mailgun Inspect
Email testing has long been a critical but time-consuming part of campaign production. From previewing how your email renders on mobile to making sure they’re
, teams juggle multiple tools, tabs, and steps—all before hitting send. We thought it was time to simplify things...
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What is an email MTA? A guide to mail transfer agents
In this guide, we’ll cover everything from the MTA basics to advanced strategies for building modern email infrastructure. Plus, we’ll give you actionable tips and ...
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Why accessibility in email isn’t optional anymore
Accessibility matters, not just because of legal requirements like the upcoming EAA (don’t worry, we’ll explain), but because it's the right thing to do. We’re recapping our latest episode of
Emails Not Dead...
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The golden age of scammers: AI-powered phishing
Long live the prince of Nigeria, he had a good run. Gone is the age where scammers wield the same mediocre power as a snake oil salesman, reliant on their own persuasion and...
Read More
What is an email MTA? A guide to mail transfer agents
In this guide, we’ll cover everything from the MTA basics to advanced strategies for building modern email infrastructure. Plus, we’ll give you actionable tips and ...
Read More
Why accessibility in email isn’t optional anymore
Accessibility matters, not just because of legal requirements like the upcoming EAA (don’t worry, we’ll explain), but because it's the right thing to do. We’re recapping our latest episode of
Emails Not Dead...
Read More
The golden age of scammers: AI-powered phishing
Long live the prince of Nigeria, he had a good run. Gone is the age where scammers wield the same mediocre power as a snake oil salesman, reliant on their own persuasion and...
Read More
Help! My email needs a correction: What to do after you’ve already hit send
Whether you’re a seasoned pro or a first time sender, if you send emails chances are you’ve experienced the regret of the send button. You thought it was a flawless email, so...
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The basics of SPF records
SPF doesn’t refer to how long you can wait before you have to reapply your sunblock (seriously, go get some). Instead, the term “SPF” refers to a security measure that helps...
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What are SMTP commands and what do you need to know about them?
Why do we need SMTP commands and what do they do? Well, we use SMTP (Simple Mail Transfer Protocol) commands to communicate with email servers. These commands are...
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Microsoft Outlooks new sender requirements: What you need to do by May 5
If you thought you were finally getting a break from the sender requirement conversation after the industry shift brought by Google and Yahoo last year, not quite. Microsoft is stepping up to the plate. In its April 2, blog, Microsoft announced new...
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How to implement DMARC – A step-by-step guide
Email spoofing is rampant across the internet. Fraudulent emails come in the form of scams, ransomware, and even stock-market manipulation. We see companies lose...
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