ESPB
Latest
Feb 18, 2026Plunk: Dashboard Analytics DelayedFeb 15, 2026The State of Email Delivery in 2026Feb 8, 2026Mailgun: EU Region Delivery DelaysFeb 3, 2026Loops: API Documentation UnavailableFeb 1, 2026Q1 2026 ESP Performance ReportJan 28, 2026API Latency Comparison: Which ESP Responds Fastest?Jan 20, 2026Transactional Email Showdown: Postmark vs Resend vs BrewFeb 18, 2026Plunk: Dashboard Analytics DelayedFeb 15, 2026The State of Email Delivery in 2026Feb 8, 2026Mailgun: EU Region Delivery DelaysFeb 3, 2026Loops: API Documentation UnavailableFeb 1, 2026Q1 2026 ESP Performance ReportJan 28, 2026API Latency Comparison: Which ESP Responds Fastest?Jan 20, 2026Transactional Email Showdown: Postmark vs Resend vs Brew

SparkPost

80

Enterprise email delivery

all-in-one
Operational
Founded 2014
Visit Website

SparkPost is an enterprise-grade email delivery platform now part of MessageBird. It powers email for some of the world's largest senders and offers advanced analytics, predictive deliverability tools, and signals-based intelligence.

Speed
79
Reliability
82
Deliverability
81
Developer Experience
76
Value
82

Current Metrics

Updated just now
Delivery Speed (p50)230ms
Delivery Speed (p95)540ms
Delivery Speed (p99)810ms
Delivery Speed (avg)290ms
API Latency (p50)58ms
API Latency (p95)170ms
API Latency (p99)290ms
API Latency (avg)75ms
Uptime (30d)99.91%
Deliverability96.5%
Bounce Rate2.2%
Throughput13,000/s

12-Month Trend

Overall Score
Delivery Speed (avg ms)
Uptime %
Deliverability %

Features

✓Predictive analytics
✓Adaptive email
✓Signals analytics
✓Dedicated IPs
✓SMTP relay
✓Engagement tracking
Pricing starts at $20/mo (50,000 emails)

Incidents (2)

Webhook Delivery FailuresMajor
SparkPost·Jan 22, 2026·1h 22m·Resolved

Event webhooks were not being delivered to customer endpoints. Email sending continued normally but tracking data was not propagated. Backfill of missed events was completed within 6 hours of resolution.

Signals Dashboard Loading SlowlyMinor
SparkPost·Sep 30, 2025·1h·Resolved

The Signals analytics dashboard was loading slowly due to database query optimization issues. Underlying data integrity was not affected.

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