SendGrid's Email Deliverability Blog

From email deliverability best practices, to hackathon highlights, API tutorials, and everything in between, the SendGrid blog is your destination for all things email. Browse our most recent posts in the main feed or filter by category. Be sure to subscribe to the blog to get a daily digest of posts and reach out to us in the comments to let us know how we're doing.

How We Use to Test 233 API Endpoints in Seconds

Product, Technical
testing API endpoints
SendGrid actively supports SDKs across 7 programming languages, with each of these SDKs supporting 233 API calls. We needed a way to test each endpoint, ensuring we don’t break basic usability while rapidly evolving our code base to support all of our new v3 APIs, without creating custom mocking code in each testing framework. made this extremely easy with its Prism mock server, giving us a Swagger/OAI-driven mocked version of the SendGrid API server. In this post, we will describe the specific workflows that allow us to test all of our endpoint interfaces in seconds rather than minutes. Read More ›

Gut Check: Who Are You Emailing?

Best Practices, Email Marketing
Today we released our latest SlideShare, Who are you emailing? It serves as a quick gut check for marketers to make sure they remember the people on the other end of the email addresses. We’ve all received unsolicited email, and whether the intention of the sender was to spam anyone or not, think of how it made you feel. It was likely off-putting and annoying. Is that the first impression you want your recipients to have with your brand? Read More ›

Email Authentication Explained

Brandon West Best Practices
email authentication
Email authentication is a daunting subject. There's an alphabet soup of acronyms and initialisms. There are often casual references to technologies that usually only IT professionals are familiar with. But the core concepts are not complicated, and most everyone will be able to quickly understand them. Let's talk about the three most important email authentication protocols in plain language, using real-world analogies. Read More ›