Resend Outage History

64 incidents recorded over the last 365 days, 64 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live Resend status98.90% uptime history

Every Recorded Resend Incident

Resend incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Aug 20, 2026Increased latency across API endpoints23 minResolved
Aug 18, 2026Contact webhook events are delayed in deliveryWe have resolved the underlying issue and service has been resumed.13h 2mResolved
Aug 16, 2026API instabilityAPI became unstable from 12:54 to 12:57 UTC, returning 5xx for approximately 7% of the requests. We have resolved the underlying issue and service has been resumed.-20 minResolved
Aug 13, 2026Errors during the domain creation processBetween approximately 17:30 and 17:43 UTC, requests to add a new domain failed in the dashboard and through the public API (POST /domains). Verification of domains added during this window was also affected. The issue…-20 minResolved
Aug 9, 2026Delayed contact webhook eventsWe have resolved the underlying issue and service has been resumed.3 minResolved
Aug 8, 2026Increased API and SMTP Error RatesOur team has mitigated the issue and this incident is fully resolved. All services are operational.42 minResolved
Aug 7, 2026Delayed contact related webhook eventsWe have resolved the underlying issue and service has been resumed.19 minResolved
Aug 4, 2026Contact webhook delivery backlogThe backlog is gone, and all delayed contact webhooks have been delivered. Delivery latency has now recovered. The new infrastructure configurations prevent this same issue from happening again.-5445 minResolved
Aug 4, 2026Test domain resend.dev failing test emailsWe have resolved the underlying issue, and sending test emails from [resend.dev](http://resend.dev) has resumed.-7322 minResolved
Jul 30, 2026Increased failure rate in Domain verificationsWe have resolved the underlying issue, and service has resumed. Domain verification has been restored, and affected verifications were re-triggered.-31 minResolved
Jul 29, 2026Elevated error rates on email sending, API, and dashboardBetween 20:15 and 20:16 UTC, a brief database disruption caused elevated error rates for approximately 45 seconds. During this window, requests to the Resend API, SMTP relay, and dashboard may have returned 5xx errors…1 minResolved
Jul 29, 2026Increased returned error ratesWe have resolved the underlying issue and service has been resumed.1h 17mResolved
Jul 22, 2026Errors creating domains and API keysWe have resolved the underlying issue and service has been resumed.-17 minResolved
Jul 20, 2026Delivery Delayed Events to Microsoft Hosted DomainsDelivery to Microsoft has returned to normal. Thank you for your patience as we worked with them regarding this.25h 48mResolved
Jul 16, 2026Elevated errors on the dashboardWe have resolved the underlying issue and service has been resumed.-36 minResolved
Jul 16, 2026Domain-related webhooks delayedWe have resolved the underlying issue and service has been resumed.32 minResolved
Jul 12, 2026Increased latency in CSV imports and automation runsWe have resolved the underlying issue and service has been resumed.6 minResolved
Jul 10, 2026Increased latency across API endpoints and email sendingWe have resolved the underlying issue and service has been resumed.50 minResolved
Jul 3, 2026Email sending delayWe have resolved the underlying issue and services have been recovered.57 minResolved
Jul 1, 2026Elevated error rates across our APIs and SMTP servicesOur team has mitigated the issue and this incident is fully resolved. All services are operational.-116 minResolved
Jun 22, 2026Delayed webhooksWe have resolved the underlying issue, and all the affected webhooks have been sent.22 minResolved
Jun 22, 2026Degraded perfomance in MetricsWe have resolved the underlying issue and service has been resumed.3h 31mResolved
Jun 22, 2026Automations not startingWe have resolved the underlying issue and service has been resumed.-7137 minResolved
Jun 17, 2026Email Events partially unavailable1131h 26mResolved
Jun 15, 2026Issues downloading attachmentsWe have resolved the underlying issue and service has been resumed.47 minResolved
Jun 3, 2026API quota reporting incorrect numbersWe have resolved the underlying issue and service has been resumed.20 minResolved
May 26, 2026Resend dashboard facing intermittent errorsWe have resolved the underlying issue and service has been resumed.-41 minResolved
May 19, 2026Email Events - Scheduled Maintenance1831h 43mResolved
May 12, 2026Inbound emails with incorrect "To" field when forwardedWe have resolved the underlying issue by reverting the unintended breaking change and service has been resumed.-5955 minResolved
May 6, 2026Custom tracking domains failing to provision for new customersThis incident is resolved. All failed provisioning requests have been reprocessed, and custom tracking domain creation is operating normally.48 minResolved
May 4, 2026Logs Page - Scheduled Maintenance2191h 33mResolved
Apr 28, 2026Email Events Displaying QueuedThis incident is resolved. Webhook deliveries and metrics page updates have been stable since our fix was deployed. Sending and receiving were unaffected throughout. Thanks for your patience.42 minResolved
Apr 27, 2026Email Events Displaying QueuedThis incident is resolved. Email events are updating in real time and have been stable since our fix was deployed. Sending and delivery were unaffected throughout. Thank you for your patience.2h 47mResolved
Apr 24, 2026Email events delayedThe processing backlog is fully cleared. All systems are operational.2h 46mResolved
Apr 23, 2026Degraded performance in email sending via API and SMTPWe have resolved the underlying issue and service has been resumed.-6 minResolved
Apr 15, 2026Increased latency for broadcast sending and domain verificationThe pending domain verifications and broadcasts are catching-up quickly. The incident should fully resolve soon.2h 38mResolved
Apr 10, 2026Email sending errorWe have resolved the underlying issue and service has been resumed.1h 18mResolved
Apr 3, 2026Delay on sending emailsWe have resolved the underlying issue and service has been resumed.-48 minResolved
Apr 2, 2026Email Sending DelayWe have resolved the underlying issue and service has been resumed.-20 minResolved
Mar 28, 2026Email sending delayWe have resolved the issue causing increased latency in email sending. Emails are being delivered normally.56 minResolved
Mar 26, 2026Email events delayedOur systems have caught up and email events are processing normally. No emails were lost or delayed during this time.-1 minResolved
Mar 24, 2026Contacts are encountering errors when unsubscribing from the audienceWe have resolved the underlying issue and service has been resumed.1h 11mResolved
Mar 20, 2026Delayed Email EventsWe have resolved the underlying issue and service has been resumed.1h 19mResolved
Mar 17, 2026Deliverability Issues to Outlook Emails22h 39mResolved
Mar 5, 2026Email events delayed17 minResolved
Mar 3, 2026Email sending delay-47 minResolved
Mar 2, 2026Increased latency in email sending-24 minResolved
Feb 27, 2026Increase latency in email sending34 minResolved
Feb 25, 2026Delay in email sending-23 minResolved
Feb 24, 2026Delay in email sending1h 36mResolved
Feb 16, 2026Errors with Resend Dashboard and Email Latency1h 27mResolved
Feb 16, 2026Errors Loading Resend and Email Sending Delays1h 50mResolved
Feb 12, 2026Increased latency in Broadast sending13 minResolved
Feb 12, 2026Intermittent Issues with SMTP18h 4mResolved
Feb 6, 2026Slow Broadcast Queue Processing16 minResolved
Feb 5, 2026Delay in email sending12 minResolved
Feb 4, 2026Errors on API-5 minResolved
Feb 3, 2026Latency increased for all background actions2h 8mResolved
Feb 3, 2026Increased latency2h 26mResolved
Feb 3, 2026Increased latency-91 minResolved
Feb 2, 2026Email sending delayed-12 minResolved
Jan 30, 2026Resend team creation error15 minResolved
Jan 27, 2026Delays in email sending30 minResolved
Jan 27, 2026Internal server error returned from the API6 minResolved

How to Read This Resend Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Resend acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single Resend outage in this window ran 91d 7h, against a mean recovery of 5d 2h. If you depend on Resend in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.