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“Email failed to send” – understanding the error message?
Let’s say you’ve integrated your app with email functionality, designed some great email content, developed a marketing strategy, and you think you’re good to go. But then you...
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What is DKIM: Learn how it works and why it’s necessary
Are you who you say you are, or are you a spoofer in disguise? Answering this question is what DKIM is all about. As email usage and capabilities continue to grow, it’s important to...
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Verifying emails using Python 3.9+ and the Mailgun API
Mailgun's Bulk Email Validation API is designed to make email verification both scalable and efficient. With it, developers can validate entire lists of email addresses, checking...
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Reading Time: 11 min
Rajkumar Venkatasamy
Rajkumar has nearly sixteen years of experience in the software industry as a developer, data modeler, tester, project lead, product consultant, data architect, ETL specialist, and technical architect. Currently he is a principal architect at an MNC. He has hands-on experience in various technologies, tools, and libraries.
What is SMTP and how does it work?
SMTP, though a pillar of email delivery, often gets lost in the jumble of tech terms and acronyms. But if you're ready to send impactful emails, this is one of those acronyms that...
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Navigating global data compliance and regulations in 2025
Protection from loss, theft, and corruption – these are the goals of data privacy regulations. Adhering to these regulations makes you a trusted sender but it takes...
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Sending email using C# and the Mailgun API
.NET is one of the most popular, stable, and admired web frameworks you can use to build modern web applications. The tooling provided by .NET can help you get started quickly and maintain your applications...
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Reading Time: 6 min
James Hickey
James is a Microsoft MVP with a background building web and mobile applications in fintech and insurance industries. He's the author of "Refactoring TypeScript" and creator of open-source tools for .NET called Coravel. He lives in Canada, just ten minutes from the highest tides in the world.
BFCM 2024: How email and omnichannel communications drove holiday success
Black Friday and Cyber Monday represent peak email sending periods that can make or break retailers' holiday success. During November...
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Email marketing deliverability: Whose job is it anyway?
Your business depends on being able to connect with people via email. That’s true for both transactional messages and promotional campaigns. But who is ultimately responsible for making sure those messages reach the inbox ...
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Key takeaways from Mailgun’s State of email deliverability 2025
Changes from major mailbox providers thrust the topic of email deliverability best practices into the spotlight over the last year. Our new, interactive report
State of email deliverability 2025
shows there are signs of improvement, but...
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Verifying emails with node.js
If you're looking to validate a batch of email addresses, Mailgun offers a bulk email validation API that can help you do just that. In this tutorial, you'll learn how to efficiently verify large lists of email addresses in Node.js applications...
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