Showing post with tag: SMTP Port

  • Email DIY

The Difference Between SMTP and API

We get it – when it comes to email, certain terms can sometimes feel like word salad, and two of the biggest can-be-confused culprits are SMTP and API. It can be hard to keep them straight, and harder to know when to use them. But no worries, we’ve got you. In this post, we’ll teach you the differences between SMTP and API, and when to use each.

Mary Dolan
7 min read
  • Email DIY

Which SMTP Port Should I Use? Understanding Ports 25, 465, & 587

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 multiple SMTP port options, but which one should you use to send email messages? We’ll take a historical look at each SMTP port and then we'll discuss today's methodology for outgoing mail usage.

Mailgun Team
7 min read

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