What Secure Ciphers does SparkPost Support?
To ensure the highest degree of security, SparkPost will be disabling a number of insecure TLS and stream cipher protocols on or after October 15.
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I have paid for overages or have a dedicated IP on my Free plan, how does this affect my support moving forward?
Free plans even with Add-ons such as a dedicated IP or previous overages are still subject to the same Free plan support changes. Learn more here.
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If I stay on my plan, can I increase my daily limits?
Your plan settings will remain as they are now. If you need a larger daily limit, please upgrade to one of our new plans.
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Can I add a dedicated IP to my existing Paid plan?
Read up on if you can add a dedicated IP to your existing paid plan. The older paid plans no longer offer the ability to add dedicated IPs to your account.
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Can I switch back to an old plan?
When you switch to a new plan (either upgrade or downgrade), you won’t be able to later switch back to an old plan that we no longer offer.
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Error messages when using SMTP
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.
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Why Configure DKIM?
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.
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How Do I Test Using the Sink Server on SparkPost?
Our sink server allows you to perform sink test messages for integration testing without attempting delivery of email to actual addresses.
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Message Delivery: Understanding Delays and Bounces
Understanding delays and bounces. If the final disposition for messages sent from SparkPost is delivered or bounced, what are delays? Learn more here.
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