Bring Your Own IP (BYOI)

September 14, 2018
SparkPost's Bring Your Own IP program provides senders of large volumes of email with the ability to quickly switch from their existing provider or on-premises solution without having to worry about warming up new IPs, managing reputation, or communicating changes to their end customers. The BYOIP service provides IP portability for large volume senders focused…
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SparkPost Events

September 12, 2018
# Event Definitions SparkPost logs several events that can be used to track the lifecycle of your emails. Individual events are available via Webhooks or the Message Events API. You can also view your recent events from the app(EU). The possible events are: Event Type Descriptions injection Email successfully generated or relayed to SparkPost. delivery…
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DKIM Signing by IP Pool

June 15, 2018
# Introduction DKIM signing by IP pool allows service providers to brand (or white label) the DKIM signature of the messages they send on behalf of their customers/senders. It gives the ability for service providers to use their own DKIM signing domain for groups of senders where having an individual DKIM signature for each from…
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TLSv1.0 Deprecation Test REST Hostnames

May 30, 2018
As part of our efforts to deprecate TLSv1.0 fallback across our systems, we have made available hostnames which can be used to test the connections and processes which leverage our REST API and SMTP services. The hostname is configured to reject TLSv1.0 connections, and therefore can be used to verify your processes are using TLSv1.1…
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Using Mobile Universal and App Links with SparkPost

April 5, 2018
# Introduction Both Universal and App links are a mechanism in iOS (9 and later) and Android (6.0 and later) that allows you to link deeply into your apps from web pages and HTML email. To use deep linking, you must publish the URLs you'd like your app to handle and then add support for…
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Best Practices for Managing Webhook Data Streams

March 22, 2018
SparkPost and SparkPost Enterprise provide data streams of raw event data via webhooks. There are several points of consideration to take into account in order to ensure you correctly receive the event data. This article details how our webhooks function so you can successfully set up your endpoint to consume streamed event data. # Webhook…
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Preparing For Asynchronous Suppressions

December 12, 2017
This article describes how to tell if you are affected by the upcoming transmissions API endpoint change for asynchronous suppressions described here and also how to prepare. # What Is Changing? The change announcement here has all the details including timing. Here is a short recap. The Transmissions API endpoint will no longer return 400…
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Enabling Inbound Email Relaying & Relay Webhooks

November 28, 2017
# What is a Relay Webhook? A Relay Webhook calls your consumer when a user sends an email to one of your domains. SparkPost will receive an email sent to your Inbound Domain (e.g., [email protected]), format that email as a JSON payload, and POST it to your consumer. A Relay Webhook is not a mailbox;…
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Open Pixel Placement on SparkPost

November 9, 2017
# Introduction The open pixel is a 1x1 transparent gif that we insert into messages to track which recipients open messages (aka renders). When an end recipient has images turned on in their client, the pixel is downloaded from our server, which allows us to record which recipient opened which message. Certain ISPs, like Gmail,…
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