The Mailgun team

No matter how good an email design looks, how compelling the copy reads, or how perfectly a campaign renders across email clients... none of it matters if your messages...

It's always 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 is...

Every time you send an email campaign, ISPs monitor your sending practices and assign a reputation to your domain and IP address. This reputation is based on several factors...

It's a common question that we receive here at Mailgun about SMTP port numbers. To ensure connectivity to our Simple Mail Transfer Protocol (SMTP) endpoint, Mailgun offers...

There are all sorts of reasons why an email might fail to be delivered and bounce back to the sender (also known as an SMTP Reply). Most of these reasons lie outside of your...