SendGrid Outage History

SendGrid's Design Editor experienced a 28.8-hour outage where users could not move or drag-and-drop modules within email templates, affecting Marketing Campaigns and API components. The issue was traced to Chrome browser version 147, with SendGrid recommending users switch to Safari or Firefox as a workaround. Engineers resolved the underlying compatibility issue and confirmed normal operations were restored.

SendGrid experienced delays in contact uploads and deletions for TNE Marketing Campaigns starting around 04:30 PST on April 17th, 2026, lasting approximately 1.3 hours. The issue affected Marketing Campaigns functionality but did not impact mail sending capabilities, and Legacy Marketing remained unaffected. Engineers implemented a fix and confirmed full resolution by 06:13 PST, with all services returning to normal operation.

EU-located subusers were unable to send emails through SendGrid's API v3, receiving "User is not authorized to send mail based on their regional attribute" errors. The issue lasted 2.8 hours starting around 08:30 AM PST on April 15th, 2026, affecting only email sending functionality for EU subusers. Engineers implemented a fix and confirmed resolution after monitoring system performance.

Starting around 07:30 AM PST on April 15th, 2026, SendGrid customers were unable to create support tickets through the website, being redirected to a blank page instead, though chat support remained functional. The issue affected only the support ticket system on the website and did not impact mail sending services. Engineers implemented a fix and confirmed full resolution after 32 minutes of monitoring.

Starting around 08:00 AM PDT on April 8th, 2026, a subset of SendGrid customers experienced issues accessing Legacy Marketing Campaigns, though mail sending functionality remained unaffected. Engineers deployed a fix and monitored the system for approximately 1.8 hours before confirming full resolution at 10:06 AM PDT.

SendGrid experienced intermittent account access and management issues for 6.7 hours on April 6, 2026, starting around 7:44 AM PT. Customers faced intermittent failures when attempting to log in, update account settings, or perform other account-level actions, while the website and API were affected. Engineers implemented a fix around 8:30 AM PT and confirmed full resolution by 2:45 PM PT, with mail sending functionality remaining unimpacted throughout the incident.

SendGrid experienced billing payment processing failures starting at 05:30 AM PST on April 6th, 2026, preventing both customers and the system from processing payments and causing payment failure notifications. The issue also affected Email Validation users who received 403 errors until account activation, and impacted account-level actions including management, settings changes, and login-related activities. Engineers identified and implemented a fix, with the incident fully resolved after 29.6 hours of monitoring, while mail sending functionality remained unaffected throughout the incident.

Starting at 11:06 AM PST on March 18, 2026, Cloudflare CAPTCHA failed to load on SendGrid and Twilio login pages, preventing customers from accessing the user console for 7.7 hours. Mail sending functionality remained unaffected throughout the incident. Engineers implemented a fix and confirmed resolution at 7:17 PM PST the same day.

SendGrid experienced a billing system issue that prevented customers in Argentina from authenticating and adding credit cards to their accounts, lasting approximately 74 hours starting February 27th. The problem was isolated to payment processing and did not affect email delivery functionality. Engineers resolved the issue by implementing a backend fix to their third-party billing system and retrying failed payments.