Resend Outage History
Resend is up right nowPingoru has recorded 104 incidents for Resend: 104 in the last 12 months and 27 in the last 90 days.
Show as a table
| Month | Incidents | Hours with an open incident |
|---|---|---|
| April 2026 | 14 | 12 of 720 (2%) |
| May 2026 | 3 | 28 of 744 (4%) |
| June 2026 | 6 | 7 of 720 (1%) |
| July 2026 | 13 | 79 of 744 (11%) |
| August 2026 | 7 | 19 of 744 (2%) |
| September 2026 | 11 | 78 of 720 (11%) |
| October 2026 | 4 | 3 of 591 (1%) |
Incidents, newest first
Minor March 20, 2026 Delayed Email Events 1h 19m Email Events
Started Mar 20, 2026, 04:01 AM UTC· resolved Mar 20, 2026, 05:20 AM UTC
- identified Mar 20, 2026, 04:01 AM UTC
Following our scheduled maintenance, Email Events are being delayed. No data was lost.
- resolved Mar 20, 2026, 05:20 AM UTC
We have resolved the underlying issue and service has been resumed.
Minor March 17, 2026 Deliverability Issues to Outlook Emails 22h 39m
Started Mar 17, 2026, 03:47 PM UTC· resolved Mar 18, 2026, 02:27 PM UTC
- investigating Mar 17, 2026, 03:47 PM UTC
We are currently investigating an issue affecting deliverability to Microsoft inbox providers. At this time, some emails sent to Outlook.com, Hotmail.com, and other Microsoft-owned domains may experience delivery delays.
- identified Mar 17, 2026, 03:58 PM UTC
We've identified that Microsoft addresses (outlook.com, hotmail.com, and other Microsoft-owned domains) are experiencing delivery delays at an elevated rate. We've informed Microsoft and are monitoring.
- identified Mar 18, 2026, 12:32 AM UTC
We’ve identified that this issue is impacting domains in the eu-west-1 region. We’re actively escalating with Microsoft to resolve this as quickly as possible. Please reach out to [email protected] for any questions and concerns.
- monitoring Mar 18, 2026, 08:53 AM UTC
We’re seeing delivery to Outlook.com, Hotmail.com, and other Microsoft-owned domains return to normal. Emails are now being delivered in a timely manner. We’ll continue to monitor closely.
- resolved Mar 18, 2026, 02:27 PM UTC
The issue has been resolved, and sending to Microsoft-owned domains has been restored.
Minor March 2, 2026 Increased latency in email sending –
Started Mar 02, 2026, 09:15 AM UTC· resolved Mar 02, 2026, 09:15 AM UTC
No vendor updates were posted for this incident.
Minor February 27, 2026 Increase latency in email sending 34m Batch Emails, Single Email, SMTP, Broadcast Emails
Started Feb 27, 2026, 05:55 PM UTC· resolved Feb 27, 2026, 06:30 PM UTC
- investigating Feb 27, 2026, 05:55 PM UTC
We are currently investigating increased latency in email sending. Emails are being accepted, though sent at a slower speed than expected.
- investigating Feb 27, 2026, 05:59 PM UTC
We are currently investigating increased latency in email sending. At this time, you may experience delays when sending emails via our SMTP service and API.
- identified Feb 27, 2026, 06:03 PM UTC
We've identified the cause of the latency and are working to mitigate it so we can return to normal sending speed.
- monitoring Feb 27, 2026, 06:12 PM UTC
Sending speed is back to normal. We'll continue to monitor.
- resolved Feb 27, 2026, 06:30 PM UTC
Performance is back to normal.
Minor February 25, 2026 Delay in email sending –
Started Feb 25, 2026, 02:16 PM UTC· resolved Feb 25, 2026, 02:16 PM UTC
No vendor updates were posted for this incident.
Minor February 16, 2026 Errors with Resend Dashboard and Email Latency 1h 27m Batch Emails, Email Events, Dashboard, Single Email and 2 more
Started Feb 16, 2026, 11:06 PM UTC· resolved Feb 17, 2026, 12:33 AM UTC
- investigating Feb 16, 2026, 11:06 PM UTC
We're currently investigating an incident with our dashboard
- investigating Feb 16, 2026, 11:09 PM UTC
We are currently investigating increased latency in email sending. Emails are being received, though they are being sent with a delay.
- identified Feb 16, 2026, 11:32 PM UTC
We're seeing improved dashboard performance and are working on email sending latency. Emails are being received, though they are being sent with a delay.
- identified Feb 16, 2026, 11:36 PM UTC
We're continuing to investigate intermittent errors with the dashboard. Emails are being received, though they are being sent with a delay.
- identified Feb 16, 2026, 11:47 PM UTC
While emails are sending, they're currently delayed and so are the email events (delivered, opened, clicked, etc.)
- monitoring Feb 17, 2026, 12:03 AM UTC
Email sending is back to normal. All previously queued emails have been successfully delivered. While we continue to improve dashboard performance, some email events may appear as "Queued" or not yet be visible in the dashboard. This is a display issue only; delivery is unaffected.
- monitoring Feb 17, 2026, 12:27 AM UTC
Email events are now up-to-date. We're continuing to monitor the dashboard and email sending.
- resolved Feb 17, 2026, 12:33 AM UTC
This incident has been resolved. Email sending and dashboard performance are both operating normally. Thank you for your patience while we worked through this.
Minor February 16, 2026 Errors Loading Resend and Email Sending Delays 23h 31m Batch Emails, Dashboard, Single Email, SMTP and 1 more
Started Feb 16, 2026, 12:00 AM UTC· resolved Feb 16, 2026, 11:32 PM UTC
- investigating Feb 16, 2026, 12:00 AM UTC
We're currently investigating errors when accessing Resend.
- investigating Feb 16, 2026, 12:07 AM UTC
We are currently investigating increased latency in email sending.
- investigating Feb 16, 2026, 12:33 AM UTC
We're continuing to investigate errors during dashboard loading and latency issues with sending.
- investigating Feb 16, 2026, 01:06 AM UTC
We've improved the dashboard's performance and are continuing to work on email latency.
- monitoring Feb 16, 2026, 01:40 AM UTC
We've resolved the cause of the dashboard errors and email sending latency. Emails that were sent during this incident have now been sent. We're continuing to monitor as we recover.
- resolved Feb 16, 2026, 01:50 AM UTC
We have resolved the underlying issue and service has been resumed.
- identified Feb 16, 2026, 11:26 PM UTC
We've resolved the dashboard error and are working on email sending latency.
- resolved Feb 16, 2026, 11:32 PM UTC
We have resolved the underlying issue and service has been resumed.
Minor February 12, 2026 Increased latency in Broadast sending 13m Broadcast Emails
Started Feb 12, 2026, 02:23 PM UTC· resolved Feb 12, 2026, 02:36 PM UTC
- investigating Feb 12, 2026, 02:23 PM UTC
We are currently investigating increased latency in broadcast sending. At this time, you may experience delays when sending broadcast emails via our API or site.
- resolved Feb 12, 2026, 02:36 PM UTC
Service has been resumed.
Minor February 12, 2026 Intermittent Issues with SMTP 18h 4m SMTP
Started Feb 12, 2026, 08:31 AM UTC· resolved Feb 13, 2026, 02:35 AM UTC
- investigating Feb 12, 2026, 08:31 AM UTC
We are currently investigating intermittent issues when sending emails with SMTP.
- investigating Feb 12, 2026, 12:08 PM UTC
We are continuing to investigate the intermittent SMTP issue with urgency. Our team is actively reviewing logs and monitoring system performance to identify the root cause. At this time, a small percentage of SMTP requests are failing. We will share additional updates as soon as more information becomes available.
- identified Feb 12, 2026, 02:21 PM UTC
We are continuing to investigate and fix the intermittent SMTP issue with urgency.
- identified Feb 12, 2026, 07:11 PM UTC
We are continuing to work on resolving the intermittent SMTP issue. A small percentage of SMTP requests may still fail. Our team is actively investigating and testing potential fixes. We will provide another update as progress is made.
- identified Feb 12, 2026, 10:21 PM UTC
We're continuing to work on this. Some SMTP requests may still intermittently fail. Our team has been ruling out potential causes and is continuing to work toward a resolution.
- monitoring Feb 13, 2026, 01:11 AM UTC
The fix has been pushed and we are now monitoring the situation.
- resolved Feb 13, 2026, 02:35 AM UTC
We have resolved the underlying issue and service has been resumed.
Minor February 6, 2026 Slow Broadcast Queue Processing 16m Broadcast Emails
Started Feb 06, 2026, 05:35 AM UTC· resolved Feb 06, 2026, 05:52 AM UTC
- investigating Feb 06, 2026, 05:35 AM UTC
We're investigating longer-than-expected queue times for Broadcasts. Delivery is still occurring, but at a reduced pace. We'll provide updates as we learn more.
- resolved Feb 06, 2026, 05:52 AM UTC
Broadcast sending has returned to normal speed. Queue times are back to expected levels. Thank you for your patience.
Critical February 4, 2026 Errors on API –
Started Feb 04, 2026, 05:48 PM UTC· resolved Feb 04, 2026, 05:48 PM UTC
No vendor updates were posted for this incident.
Minor February 3, 2026 Latency increased for all background actions 2h 8m
Started Feb 03, 2026, 09:13 PM UTC· resolved Feb 03, 2026, 11:21 PM UTC
No vendor updates were posted for this incident.
Minor February 3, 2026 Increased latency 2h 26m
Started Feb 03, 2026, 11:21 AM UTC· resolved Feb 03, 2026, 01:48 PM UTC
No vendor updates were posted for this incident.
Minor February 2, 2026 Email sending delayed 18m Batch Emails, General API, Email Events, Webhooks and 5 more
Started Feb 02, 2026, 05:39 PM UTC· resolved Feb 02, 2026, 05:57 PM UTC
- identified Feb 02, 2026, 05:39 PM UTC
We have identified emails being delayed and queueing up.
- resolved Feb 02, 2026, 05:57 PM UTC
We have resolved the underlying issue and service has been resumed.
Minor January 30, 2026 Resend team creation error 15m
Started Jan 30, 2026, 11:42 AM UTC· resolved Jan 30, 2026, 11:58 AM UTC
- investigating Jan 30, 2026, 11:42 AM UTC
We’re currently investigating an issue affecting Resend team creation. You may see an error when attempting to create a new team. We’ll share updates as we learn more.
- resolved Jan 30, 2026, 11:58 AM UTC
The underlying issue has been identified and resolved, and services have been fully restored. Thanks for your patience while we worked through this.
Minor January 27, 2026 Delays in email sending 30m Batch Emails, Email Events, Single Email, SMTP and 1 more
Started Jan 27, 2026, 05:19 PM UTC· resolved Jan 27, 2026, 05:50 PM UTC
- investigating Jan 27, 2026, 05:19 PM UTC
We are currently investigating increased latency in email sending. At this time, you may experience delays when sending emails via our SMTP service and API.
- monitoring Jan 27, 2026, 05:43 PM UTC
We have identified the issue causing delays in email delivery. Our services are processing the backlog and should be up to date within a few minutes. Also, we want to make it clear that no emails were lost.
- resolved Jan 27, 2026, 05:50 PM UTC
Our systems have caught up with the delayed emails and are healthy again. No emails were lost during the period of degraded performance.
Minor January 27, 2026 Internal server error returned from the API 44m General API
Started Jan 27, 2026, 12:01 PM UTC· resolved Jan 27, 2026, 12:45 PM UTC
- monitoring Jan 27, 2026, 12:01 PM UTC
We had a time window starting at 12:01 PM UTC and ending at 12:08 PM UTC during which our API returned 50x error responses for a subset of requests. The root cause has been identified and addressed. The API is now recovered and our team is monitoring.
- resolved Jan 27, 2026, 12:45 PM UTC
We have resolved the underlying issue and confirmed the service has been resumed.