SparkPost
B · Infrastructure & DataAcquired by Bird (formerly MessageBird)SparkPost delivers industry-leading email deliverability and real-time analytics through a scalable cloud infrastructure, enabling businesses to optimize inbox placement and engagement for both transactional and marketing emails.
Last updated Feb 8, 2026
- Industry
- Email Service Provider / Marketing Infrastructure
- Business Model
- SaaS
- Target Market
- Mid-Market and Enterprise
- Employee Count
- 51-200
- Funding
- $76M
- Revenue Range
- $10M-$50M
- Parent Company
- Bird (formerly MessageBird)
- API Available
- Yes
Market Position
Leading email delivery platform focused on high-volume senders with emphasis on deliverability and developer experience
Overview
SparkPost is a leading email delivery and analytics platform that provides cloud-based email infrastructure for businesses to send transactional and marketing emails at scale. The company specializes in email deliverability optimization, offering robust APIs, real-time analytics, and predictive intelligence to help organizations maximize inbox placement rates. SparkPost's platform is built to handle high-volume email sending, processing billions of messages monthly for companies ranging from startups to Fortune 500 enterprises. As part of the broader marketing technology ecosystem, SparkPost serves as critical infrastructure for email communications, competing in the email service provider (ESP) and email API space. The company was acquired by MessageBird (now Bird) in 2021, integrating its email capabilities into a broader omnichannel communications platform. SparkPost's technology is particularly valued for its deliverability expertise, comprehensive analytics, and developer-friendly APIs that enable businesses to programmatically manage email campaigns and transactional messaging with high reliability and performance.
Products & Features
Email API
RESTful API for sending transactional and marketing emails with advanced templating and personalization capabilities
SMTP Relay
Traditional SMTP service for applications that require SMTP-based email sending
Deliverability Analytics
Real-time analytics and reporting on email performance, engagement metrics, and deliverability insights
Predictive Analytics
Machine learning-powered insights to optimize send times and improve engagement rates
Inbox Tracker
Tool for monitoring inbox placement across major email providers
Signals Analytics
Advanced email intelligence platform providing actionable insights on deliverability and engagement
Key Features
High-volume email sending infrastructureReal-time analytics and reportingAdvanced deliverability optimizationPredictive email intelligenceWebhook event streamingDynamic templating engineA/B testing capabilitiesSuppression list managementBounce and complaint handlingIP pool managementSubaccount managementComprehensive API documentation
Use Cases
Transactional email delivery (receipts, notifications, password resets)Marketing campaign distributionE-commerce order confirmations and shipping updatesSaaS application notificationsCustomer engagement and lifecycle emailsHigh-volume email sending for enterprisesEmail deliverability optimization and monitoringMulti-tenant email infrastructure for platforms
Customer Segments
E-commerce companiesSaaS platformsDigital publishersFinancial servicesTechnology companiesEnterprise organizationsMarketing agenciesPlatform providers