Mailchimpmajor2h 14mResolved
Delayed campaign sends during peak window
Mailchimp reported elevated queue times for bulk campaign sends. Our synthetic tests confirmed 18-minute median delays vs the 4-minute baseline during the incident window.
Incident timeline
Timeline of documented incidents across the email platforms we track. Severity based on impact to our synthetic tests and public status reports.
SendGridminor47mResolved
API rate limiting on shared IP pool
SendGrid applied stricter rate limits on shared IP tiers. Transactional API p50 latency rose from 112ms to 340ms before returning to baseline.
Klaviyominor1h 08mResolved
Flow trigger processing backlog
Klaviyo experienced delayed flow trigger evaluation during a database migration. Event-triggered automations lagged by up to 12 minutes. No sends were lost.
HubSpotmajor3h 22mResolved
Marketing email dashboard unavailable
HubSpot marketing hub experienced partial outage affecting email reporting and scheduling UI. API sends continued but scheduling new campaigns required workarounds.
Resendminor23mResolved
Elevated bounce processing latency
Resend webhook delivery for bounce events lagged behind real-time by up to 8 minutes. Send API performance was unaffected.
How we track incidents
We monitor public status pages and run synthetic send checks every 15 minutes. An incident is logged when either source reports degraded performance lasting more than 15 minutes. We do not have access to vendor-internal telemetry.