SendGrid’s Web API and SMTP Relay are the two primary methods of integrating with and sending email through SendGrid. You can think of their differences like methods of delivering a package: you could send a package in the mail, or you could drive it to the destination yourself. While the methods of delivery are different, […]
Port 587 vs port 465—what’s the difference which should you use? This is a pretty common question that comes up when sending emails. Below, we’ll walk you through everything you need to know about port 587 and port 465. But first—let’s get into a little necessary background information. What is SMTP? SMTP stands for Simple […]
New to SMTP relay service? We’ve got you covered. This post provides a quick explainer for everything SMTP relay servers. You’ll learn the following: What is an SMTP relay service? How does an SMTP relay server work? What is an SMTP mail relay? Why is an SMTP relay service important? What is an SMTP relay […]
Not sure what an SMTP error code means? You’re not alone. It can be shocking and confusing to see SMTP errors sometimes, and we want to eliminate the confusion with a quick and easy explanation. Below, we’ll explain everything you need to know about SMTP error codes, including short explanations of common ones you’ve likely […]
Emails play a big role in how we communicate, but what happens when we send an email? The process of sending an email is similar to mailing a physical letter: through a series of steps, an organized system takes care of the envelope and drops it off to the recipient. However, with emails, the SMTP […]
What if someone could send a message, fake your brand, send from your email account, and break your email infrastructure? And what if we tell you that spammers can do all of these things when you fail to properly secure your email program? Spammers have proven time and again that they are ready to take […]
SMTP servers are a great way to send email, but figuring out the best solution for your business can be difficult. Is it better to build an on-premise solution? Or does it make more sense to use a hosted SMTP relay service provider? In this article we explain how to start with SMTP servers, what […]