The older paid plans no longer offer the ability to add dedicated IPs to your account. If you require dedicated IPs please upgrade to one of our new plans from the Accounts/Billing page. Please note that new plans from 150K upwards include a dedicated IP, allowing you to add an IP Pool and new IP.…

Your monthly cost will remain the same for the lifetime of your account. However, your overages will be capped at your maximum sending from the last 90 days or the published plan volume plus 30%, whichever is the greater. If you intend to send more than your limit, we’d encourage you to take advantage of…

We will no longer offer old pricing tiers once these changes take effect on August 17, 2017. Existing customers may stay on their current tier at the current price without the additional support options or they can move to a new sending tier.

If you send mail through SMTP rather than REST, you may encounter some SMTP error messages. Here's what to do when you receive them.

If you're sending via SMTP you may wonder why configure DKIM? Learn why configuring DKIm is the best way to protect your sending reputation.

Our sink server allows you to perform sink test messages for integration testing without attempting delivery of email to actual addresses.

SparkPost provides the ability to add or delete additional users to your account. This self-service feature is available via the user interface in the Account > Users section of the UI.  Moreover, there are also two role-based features available in the Web UI and they are: Admin and Reporting. Admin Role: Has access to all…

Understanding delays and bounces. If the final disposition for messages sent from SparkPost is delivered or bounced, what are delays? Learn more here.

Time series graphs on the summary page calculate most rate metrics against the number of targeted messages. Display the results for specific times and more.