The Sinch Mailgun team

SMTP, or

, is the language servers use to talk to each other when sending emails. When something breaks during that conversation, the server returns a code to explain what happened. These

offer valuable insights, helping you figure out what went wrong and how to fix it...

It's frustrating as an email sender when your messages don’t get through. Especially if you don't know why it's happening. In this article, we’ll dig into why Gmail may be blocking...

Sending good email isn't just about sharp copy or eye-catching design. If mailbox providers don’t trust your domain, your messages won’t land where they should. Domain reputation plays a big role in getting to the inbox, and too many senders ignore it until there’s a problem...

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...

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...