Before getting started using CC and BCC with the REST API, please read What are the differences between CC, BCC, and archive recipients? Note: to use CC, BCC, and Archiving with SMTP, check out our SMTP API reference documentation. Note: Please be advised that CC and BCC  messages count towards your usage. # What is CC?…

cc, bcc, and archive recipients have the same reporting events as regular recipients but there are subtle differences between these messages in the headers

You can send email via SparkPost from any domain that you or your customers control, but what if you need to send on behalf of others? Here are the steps.

Learn about all the types of encrypted messages SparkPost support, including Transport Layer Security (TLS). SSL/TLS, STARTTLS and more

Some answers to the question "why are messages being rejected after receiving a 250 ok", with links to resources to correct the error.

Information on how to access the REST APIs and acquire an API key with appropriate permissions for that API.

If you are having trouble contacting [email protected], you've received an email from them, sent your reply but never heard back, here are options.