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Amy · 13 min read
What is a DMARC record and why your domain needs one

DMARC gives you invaluable insights into your domain activity, while also allowing you to tailor your level of security and prevent spoofers from abusing your domain. In 2026, DMARC is the protocol that all serious senders should be using.

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Amy · 7 min read
How to send SMS with Python

In this tutorial, you’ll learn how to pair your Python knowledge with a reliable SMS service and SMS API to start sending SMS with Python in minutes.

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Amy · 6 min read
Guide to using Golang to send SMS

Transactional SMS can really take your app and user experience up a notch, and it’s easier to set up than you think. With a phone number and SMS API, you can start sending SMS with Golang in minutes.

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Amy · 12 min read
Creating feedback emails that get results (with examples & templates)

Feedback request emails are the best way to get customers’ thoughts about your product or service. Learn how to use feedback emails effectively and you'll continually improve your business and keep customers happy!

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Amy · 13 min read
How to send emails with Go: API, SMTP & Golang packages

Thanks to its simplicity, rich standard library, and wealth of built-in tools, there are numerous options for integrating email sending into Go applications. In this guide, we’ll cover email delivery via API, SMTP and Golang packages.

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Amy · 27 min read
How to send emails with Node.js: Email API or Nodemailer (SMTP)

Node.js is a powerful JavaScript runtime known for its non-blocking, event-driven architecture and ability to handle asynchronous operations well—including email!

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Amy · 17 min read
How to send survey emails (with examples and templates)

Collecting data about your customers is crucial for business growth and development. Survey emails are an easy and cost-effective way to gain these insights. Follow this guide to add effective survey emails to your transactional email flow.

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Amy · 13 min read
Understanding SMTP ports 25, 465, 587, 2525 and choosing the right one

Choosing an SMTP port can be confusing, but understanding the different ports and what they do is important to properly secure your SMTP connections.

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Amy · 4 min read
Developer’s guide to email headers

Email headers offer up a blueprint for the message they belong to. They carry critical information about delivery paths, senders, recipients, and email servers, making them important for deliverability, security, and the user experience.

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