Developer Archives

Aug. 10, 2018 by J. Sorensen

The Bayesian Logic in SparkPost’s A/B Testing API

Our new API feature for A/B testing transactional emails uses a statistical algorithm, Bayesian Logic, for picking the winning variant of the message.

Aug. 3, 2018 by T. Mairs

3 Tips When Migrating to SparkPost from Postfix, Sendmail or Exim

Our guide for a successful SparkPost migration when transitioning from Postfix, Sendmail, or Exim includes the basics of sending and reporting on email.

Aug. 1, 2018 by Sparky

How to Improve Your Email Accessibility

Mark Robbins of Rebel shares his perspective on how brands should be thinking about email accessibility and assistive technology in their campaigns.

Jul. 20, 2018 by Sparky

Idea Hacking: Using Neptune to Enrich Customer Engagement

Our hackathon winners use Amazon's Neptune to connect emails with recipients by tagging templates with keywords and linking it to recipient engagements.

Jul. 6, 2018 by J. Goldstein

How to Determine the Subaccount ID from a Subaccount API Key

For ESPs needing to determine a subaccount CID to pull analytics data from SparkPost, this hack allows you to do so using the subaccount API.

Jun. 22, 2018 by S. Tuck

Bouncy Sink Part 2: Features, Configuration and Installation

We introduced the bouncy sink to test mail traffic patterns, now dive deeper into features, installation and configuration of your own bouncy sink.

Jun. 15, 2018 by S. Tuck

How to Generate Realistic Test Traffic Patterns in your SparkPost Account

Behold, a “bouncy sink” that behaves like real-world recipients and a “traffic generator” to easily test traffic patterns and complex sending environments.

May. 9, 2018 by J. Sorensen

This is My Code

In This is My Code, our lead data scientist outlines code written in Javascript for a NodeJS process used to move data between AWS ElastiCache Redis and S3.

Apr. 23, 2018 by T. Mairs

A FreeMarker Converter in C#

One of our engineers walks through step by step how he created a FreeMarker conversion tool in C# to support SparkPost templates.

Engineering Blog

Technical, engineering and developer posts