What SMTP Port Should I Use?

“What SMTP port should I use?” is a common question. SMTP port 587 is the best choice for connecting to SparkPost (or nearly any other email server).

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Adaptive Delivery: A Better Way to Handle Message Rejection

Our Adaptive Delivery feature is a rules-based engine that undergoes constant tuning and training to give your mail a better chance of being delivered.

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Top 10 Blogs for SparkPost in 2016

2016 was quite the year! We’re recapping the top 10 blogs from the past twelve months and highlighting trends and themes from 2016.

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How to Set Up SparkPost as Your SMTP Relay

A step-by-step guide to setting up SparkPost as an SMTP relay. Start sending emails quickly through any preferred email client with ease today!

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The Differences Between Using SMTP or API with SparkPost

Sending email through SparkPost can be done through SMTP or using our API. We'll take you through the pros and cons of each method with some examples.

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How to Create, Delete, Retrieve and Update an Email Recipient List in SparkPost

Whenever you’re sending bulk email, or even email to more than a handful of recipients, it’s best to put them in an email recipient list. This is particularly true if you plan to send multiple emails ...

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Explaining What Is DKIM to Your Grandmother

Email systems have grown increasingly complex since they first appeared in the early 1970s. The growth of the Internet (as measured by users of internet-enabled services) is largely responsible.

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