Customers churn when emails are lost in spam folders or delayed. Whether you’re building a high-growth consumer service or enterprise software, and sending billions—or even hundreds—of messages a month, email plays a critical role in engaging and retaining your customers.
Missing or Delayed Emails Lead to Customer Churn

Email Deliverability is Challenging and Time Consuming
Diagnosing email security issues, ongoing monitoring of spam blacklists, and working with very large ISPs is incredibly time-consuming and requires a skillset many engineering teams don’t have.

The world’s most sophisticated senders rely on SparkPost to deliver billions of emails every day.






Take the Guesswork Out of Email Analytics
Bounce, open, and click-through rates can indicate serious email delivery issues. Get real-time insight on your email delivery health. Over 35 individual metrics offer an accurate picture of deliverability and engagement, including delivery, bounces, and blocks.
Intelligent Email Delivery
Our?Adaptive Delivery?technology aggregates real-time delivery data from millions of email messages to automatically optimize email delivery for every ISP and market. Adaptive Delivery ensures you have fewer bounces, blocks, and delays.


Access the Industry’s Best Experts
You can’t afford to take shortcuts when email delivery is critical to the success of your product—and business. Customers upgrading to SparkPost’s Premier and Enterprise add-on plans can rely on:
- Technical Account Managers (TAMs)?and enhanced deliverability support
- Proactive deliverability reporting, planning, and account reviews
- Global ISP relations and mediation

Learn More about Email Deliverability
Develop?your email expertise with SparkPost’s email deliverability?resources.
Intro to Email Bounces | SparkPost Academy
Learn why email notifications bounce and how you can take action with the data you receive from hard and soft bounces.
read moreEmail Deliverability Support
Get help with email deliverability in the SparkPost Support Center.
read more10 Steps to Great Email Deliverability
Get 10 practical tips from SparkPost’s email pros that will help you start sending messages with great deliverability and inbox performance.
read more