Deliverability

We all have those moments when we get nervous and need to double-check ourselves. Did we fill in the right answer bubbles on a test? Did we type in the right password when...

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...

Email deliverability sometimes feels like a mirage. Your messages go on a long journey from your mail server to your subscribers’ inboxes. But it’s the last part of that journey that...

Email authentication lets mailbox providers know that you’re a trusted sender – that you are who you say you are. As a Technical Account Manager at Mailgun, I’m constantly...

We’ve talked a lot about email bounces and email bounce rates as a whole in the past before, but we’ve really only ever dipped our toes into the different types of bounces...

Remember relay races in school? Just as runners pass along a baton, an SMTP relay passes along an email from one server to another. Sinch Mailgun’s free SMTP relay...

Bulk senders have had a lot of questions around what implementing a one-click unsubscribe process means since the requirement was announced by Gmail and Yahoo...

The moment Vesper Lynd slinks onto the screen in Casino Royale, you know exactly how this will all play out. Despite being a world-class spy, James Bond will fall hard for the...

The world of email is undergoing a significant shift. With Google and Yahoo recently increasing enforcement on DMARC, many organizations are having to implement DMARC...

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...