# Overview SparkPost supports secure tracking domains through the use of content delivery networks (CDNs), reverse proxies, or any method where the customer can host the necessary SSL/TLS certificates. It is recommended that our customers use SSL as it provides secure transport for engagement data while being necessary to support SparkPost engagement tracking with Google’s…

The SparkPost Events Search API is a new tool providing robust querying capabilities on top of your SparkPost event data. The API provides the capability to debug deliverability issues in mail streams quickly and with granular detail, view the lifecycle of individual email messages, and sync your SparkPost data out to external sources. In this…

Recipient Validation is an easy, efficient way to verify that email addresses are valid before you send. It runs addresses through a series of checks that catch many common problems, including syntax issues and non-existent mailboxes. Contact sales for pricing. You can use the API to validate single addresses when you initially collect them, or…

The Transmissions API is among our most heavily used endpoints. We know how critical it is to how our customers integrate email into their applications. That’s why we’re continuously looking for ways to further strengthen its reliability, maximize its performance, and improve the developer experience. It’s also why we’re very careful about making any changes…

In an effort to standardize our API responses to provide a more consistent API experience, all current error responses will be updated on January 12 2019 in the following manner: The description field will no longer be returned in error responses, in favor of the message field. The message field will include the information previously…

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…

# 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 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 Recipient…

# 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…

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…