Resend Outage History

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There were 22 Resend outages since February 3, 2026. Each is summarised below — incident details, duration, and resolution information.

Source: https://resend-status.com

Minor April 28, 2026

Email Events Displaying Queued

Detected by Pingoru
Apr 28, 2026, 08:01 PM UTC
Resolved
Apr 28, 2026, 08:01 PM UTC
Duration
—
Affected: Email Events
Timeline · 4 updates
  1. investigating Apr 28, 2026, 07:17 PM UTC

    Status: Investigating We are currently investigating a delay in updating of email events. Emails are being sent/delivered, though the events may display as Queued. Affected components Email Events (Degraded performance)

  2. identified Apr 28, 2026, 07:17 PM UTC

    Status: Identified We've identified the cause of the delay in email events. Event statuses are beginning to catch up. Emails continue to be sent and delivered as normal. Only the displayed status was affected. Affected components Email Events (Degraded performance)

  3. monitoring Apr 28, 2026, 07:29 PM UTC

    Status: Monitoring We've deployed a fix for the delayed events. Webhook deliveries and email event statuses have caught up and are updating in real time. We're monitoring to confirm the fix holds. Affected components Email Events (Degraded performance)

  4. resolved Apr 28, 2026, 08:01 PM UTC

    Status: Resolved This 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. Affected components Email Events (Operational)

Read the full incident report →

Minor April 24, 2026

Email events delayed

Detected by Pingoru
Apr 24, 2026, 07:26 PM UTC
Resolved
Apr 24, 2026, 07:26 PM UTC
Duration
—
Affected: Email Events
Timeline · 4 updates
  1. investigating Apr 24, 2026, 04:37 PM UTC

    Status: Investigating We are currently investigating increased latency in email events being updated. Affected components Email Events (Degraded performance)

  2. identified Apr 24, 2026, 05:58 PM UTC

    Status: Identified We've identified the cause of the Queued events are currently working through the backlog of events. Affected components Email Events (Degraded performance)

  3. identified Apr 24, 2026, 06:55 PM UTC

    Status: Identified We're continuing to work through the backlog of events. Affected components Email Events (Degraded performance)

  4. resolved Apr 24, 2026, 07:26 PM UTC

    Status: Resolved The processing backlog is fully cleared. All systems are operational. Affected components Email Events (Operational)

Read the full incident report →

Minor April 15, 2026

Increased latency for broadcast sending and domain verification

Detected by Pingoru
Apr 15, 2026, 05:05 PM UTC
Resolved
Apr 15, 2026, 05:05 PM UTC
Duration
—
Affected: General APIDashboardBroadcast Emails
Timeline · 4 updates
  1. investigating Apr 15, 2026, 01:33 PM UTC

    Status: Investigating We are currently investigating an increase in latency when sending Broadcasts Affected components Broadcast Emails (Degraded performance)

  2. monitoring Apr 15, 2026, 02:44 PM UTC

    Status: Monitoring We've identified the root cause. We're working with a third-party provider to solve the underlying issue as we work on mitigation actions. In addition to Broadcasts, Domain verification may take longer than usual. Affected components Broadcast Emails (Degraded performance) General API (Degraded performance) Dashboard (Degraded performance)

  3. monitoring Apr 15, 2026, 04:01 PM UTC

    Status: Monitoring The underlying issue has been identified and our third-party provider has pushed improvements. We're seeing an improvement in domain verifications and broadcast email throughput. We'll continue to monitor the situation and work on mitigation actions. Affected components Dashboard (Degraded performance) Broadcast Emails (Degraded performance) General API (Degraded performance)

  4. resolved Apr 15, 2026, 05:05 PM UTC

    Status: Resolved The pending domain verifications and broadcasts are catching-up quickly. The incident should fully resolve soon. Affected components Broadcast Emails (Operational) General API (Operational) Dashboard (Operational)

Read the full incident report →

Minor April 10, 2026

Email sending error

Detected by Pingoru
Apr 10, 2026, 12:20 PM UTC
Resolved
Apr 10, 2026, 12:20 PM UTC
Duration
—
Affected: Batch EmailsGeneral APISingle EmailSMTPBroadcast Emails
Timeline · 5 updates
  1. investigating Apr 10, 2026, 10:56 AM UTC

    Status: Investigating We are currently investigating an issue affecting email sending. At this time, you may encounter 404 errors when sending emails via our SMTP service and API. Affected components Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance)

  2. identified Apr 10, 2026, 11:16 AM UTC

    Status: Identified We’ve identified the root cause and are working on a fix. We’ll share updates as soon as more information becomes available. Affected components Single Email (Full outage) SMTP (Full outage) Broadcast Emails (Full outage) Batch Emails (Full outage) General API (Full outage)

  3. monitoring Apr 10, 2026, 11:25 AM UTC

    Status: Monitoring A fix has been applied for Email Sending and SMTP, and we are now monitoring the situation. You may still notice errors on our general API endpoints. Affected components General API (Full outage) Single Email (Operational) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

  4. monitoring Apr 10, 2026, 12:05 PM UTC

    Status: Monitoring The fix has been pushed to the General API and we are now monitoring the situation. Affected components Single Email (Operational) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational) General API (Operational)

  5. resolved Apr 10, 2026, 12:20 PM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational) General API (Operational) Single Email (Operational)

Read the full incident report →

Minor March 28, 2026

Email sending delay

Detected by Pingoru
Mar 28, 2026, 04:02 AM UTC
Resolved
Mar 28, 2026, 04:02 AM UTC
Duration
—
Affected: Batch EmailsSingle EmailBroadcast Emails
Timeline · 4 updates
  1. investigating Mar 28, 2026, 03:06 AM UTC

    Status: Investigating 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. Affected components Single Email (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance)

  2. identified Mar 28, 2026, 03:35 AM UTC

    Status: Identified We have identified the cause of increased latency in email sending. A subset of customers may experience delays when sending emails via our SMTP service and API. We are actively working on a resolution and will provide updates shortly. Affected components Single Email (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance)

  3. monitoring Mar 28, 2026, 03:44 AM UTC

    Status: Monitoring We have resolved the issue causing increased latency in email sending. All emails should now be delivered without delay. Affected components Batch Emails (Operational) Single Email (Operational) Broadcast Emails (Operational)

  4. resolved Mar 28, 2026, 04:02 AM UTC

    Status: Resolved We have resolved the issue causing increased latency in email sending. Emails are being delivered normally. Affected components Single Email (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

Read the full incident report →

Minor March 24, 2026

Contacts are encountering errors when unsubscribing from the audience

Detected by Pingoru
Mar 24, 2026, 09:23 PM UTC
Resolved
Mar 24, 2026, 09:23 PM UTC
Duration
—
Timeline · 2 updates
  1. investigating Mar 24, 2026, 08:12 PM UTC

    Status: Investigating We're currently investigating errors when contacts try to unsubscribe the audience/segment.

  2. resolved Mar 24, 2026, 09:23 PM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed.

Read the full incident report →

Minor March 20, 2026

Delayed Email Events

Detected by Pingoru
Mar 20, 2026, 05:20 AM UTC
Resolved
Mar 20, 2026, 05:20 AM UTC
Duration
—
Affected: Email Events
Timeline · 2 updates
  1. identified Mar 20, 2026, 04:01 AM UTC

    Status: Identified Following our scheduled maintenance, Email Events are being delayed. No data was lost. Affected components Email Events (Degraded performance)

  2. resolved Mar 20, 2026, 05:20 AM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components Email Events (Operational)

Read the full incident report →

Minor March 18, 2026

Deliverability Issues to Outlook Emails

Detected by Pingoru
Mar 18, 2026, 02:27 PM UTC
Resolved
Mar 18, 2026, 02:27 PM UTC
Duration
—
Timeline · 5 updates
  1. investigating Mar 17, 2026, 03:47 PM UTC

    Status: Investigating 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.

  2. identified Mar 17, 2026, 03:58 PM UTC

    Status: Identified 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.

  3. identified Mar 18, 2026, 12:32 AM UTC

    Status: Identified 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.

  4. monitoring Mar 18, 2026, 08:53 AM UTC

    Status: Monitoring 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.

  5. resolved Mar 18, 2026, 02:27 PM UTC

    Status: Resolved The issue has been resolved, and sending to Microsoft-owned domains has been restored.

Read the full incident report →

Minor February 27, 2026

Increase latency in email sending

Detected by Pingoru
Feb 27, 2026, 06:30 PM UTC
Resolved
Feb 27, 2026, 06:30 PM UTC
Duration
—
Affected: Batch EmailsSingle EmailSMTPBroadcast Emails
Timeline · 5 updates
  1. investigating Feb 27, 2026, 05:55 PM UTC

    Status: Investigating We are currently investigating increased latency in email sending. Emails are being accepted, though sent at a slower speed than expected. Affected components Batch Emails (Degraded performance) Single Email (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance)

  2. investigating Feb 27, 2026, 05:59 PM UTC

    Status: Investigating 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. Affected components SMTP (Degraded performance) Broadcast Emails (Operational) Batch Emails (Degraded performance) Single Email (Degraded performance)

  3. identified Feb 27, 2026, 06:03 PM UTC

    Status: Identified We've identified the cause of the latency and are working to mitigate it so we can return to normal sending speed. Affected components Single Email (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Operational) Batch Emails (Degraded performance)

  4. monitoring Feb 27, 2026, 06:12 PM UTC

    Status: Monitoring Sending speed is back to normal. We'll continue to monitor. Affected components Broadcast Emails (Operational) Batch Emails (Operational) Single Email (Operational) SMTP (Operational)

  5. resolved Feb 27, 2026, 06:30 PM UTC

    Status: Resolved Performance is back to normal. Affected components SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational) Single Email (Operational)

Read the full incident report →

Minor February 17, 2026

Errors with Resend Dashboard and Email Latency

Detected by Pingoru
Feb 17, 2026, 12:33 AM UTC
Resolved
Feb 17, 2026, 12:33 AM UTC
Duration
—
Affected: Batch EmailsEmail EventsDashboardSingle EmailSMTPBroadcast Emails
Timeline · 8 updates
  1. investigating Feb 16, 2026, 11:06 PM UTC

    Status: Investigating We're currently investigating an incident with our dashboard Affected components Dashboard (Degraded performance)

  2. investigating Feb 16, 2026, 11:09 PM UTC

    Status: Investigating We are currently investigating increased latency in email sending. Emails are being received, though they are being sent with a delay. Affected components Single Email (Degraded performance) Dashboard (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance)

  3. identified Feb 16, 2026, 11:32 PM UTC

    Status: Identified 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. Affected components Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance) Dashboard (Operational) SMTP (Degraded performance)

  4. identified Feb 16, 2026, 11:36 PM UTC

    Status: Identified We're continuing to investigate intermittent errors with the dashboard. Emails are being received, though they are being sent with a delay. Affected components Dashboard (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance)

  5. identified Feb 16, 2026, 11:47 PM UTC

    Status: Identified While emails are sending, they're currently delayed and so are the email events (delivered, opened, clicked, etc.) Affected components Single Email (Degraded performance) Dashboard (Degraded performance) Email Events (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance)

  6. monitoring Feb 17, 2026, 12:03 AM UTC

    Status: Monitoring 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. Affected components Single Email (Operational) Dashboard (Operational) Email Events (Degraded performance) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

  7. monitoring Feb 17, 2026, 12:27 AM UTC

    Status: Monitoring Email events are now up-to-date. We're continuing to monitor the dashboard and email sending. Affected components Single Email (Operational) Dashboard (Operational) Email Events (Operational) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

  8. resolved Feb 17, 2026, 12:33 AM UTC

    Status: Resolved This incident has been resolved. Email sending and dashboard performance are both operating normally. Thank you for your patience while we worked through this. Affected components Batch Emails (Operational) Single Email (Operational) Dashboard (Operational) Email Events (Operational) SMTP (Operational) Broadcast Emails (Operational)

Read the full incident report →

Minor February 16, 2026

Errors Loading Resend and Email Sending Delays

Detected by Pingoru
Feb 16, 2026, 11:32 PM UTC
Resolved
Feb 16, 2026, 11:32 PM UTC
Duration
—
Affected: Batch EmailsDashboardSingle EmailSMTPBroadcast Emails
Timeline · 8 updates
  1. investigating Feb 16, 2026, 12:00 AM UTC

    Status: Investigating We're currently investigating errors when accessing Resend. Affected components Dashboard (Degraded performance)

  2. investigating Feb 16, 2026, 12:07 AM UTC

    Status: Investigating We are currently investigating increased latency in email sending. Affected components SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance) Dashboard (Degraded performance)

  3. investigating Feb 16, 2026, 12:33 AM UTC

    Status: Investigating We're continuing to investigate errors during dashboard loading and latency issues with sending. Affected components SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance) Dashboard (Degraded performance)

  4. investigating Feb 16, 2026, 01:06 AM UTC

    Status: Investigating We've improved the dashboard's performance and are continuing to work on email latency. Affected components Batch Emails (Degraded performance) Single Email (Degraded performance) Dashboard (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance)

  5. monitoring Feb 16, 2026, 01:40 AM UTC

    Status: Monitoring 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. Affected components SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational) Single Email (Operational) Dashboard (Operational)

  6. resolved Feb 16, 2026, 01:50 AM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components Single Email (Operational) Dashboard (Operational) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

  7. identified Feb 16, 2026, 11:26 PM UTC

    Status: Identified We've resolved the dashboard error and are working on email sending latency. Affected components Dashboard (Operational) SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) Single Email (Degraded performance)

  8. resolved Feb 16, 2026, 11:32 PM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational) Single Email (Operational) Dashboard (Operational)

Read the full incident report →

Minor February 13, 2026

Intermittent Issues with SMTP

Detected by Pingoru
Feb 13, 2026, 02:35 AM UTC
Resolved
Feb 13, 2026, 02:35 AM UTC
Duration
—
Affected: SMTP
Timeline · 7 updates
  1. investigating Feb 12, 2026, 08:31 AM UTC

    Status: Investigating We are currently investigating intermittent issues when sending emails with SMTP. Affected components SMTP (Partial outage)

  2. investigating Feb 12, 2026, 12:08 PM UTC

    Status: Investigating 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. Affected components SMTP (Partial outage)

  3. identified Feb 12, 2026, 02:21 PM UTC

    Status: Identified We are continuing to investigate and fix the intermittent SMTP issue with urgency. Affected components SMTP (Partial outage)

  4. identified Feb 12, 2026, 07:11 PM UTC

    Status: Identified 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. Affected components SMTP (Partial outage)

  5. identified Feb 12, 2026, 10:21 PM UTC

    Status: Identified 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. Affected components SMTP (Partial outage)

  6. monitoring Feb 13, 2026, 01:11 AM UTC

    Status: Monitoring The fix has been pushed and we are now monitoring the situation. Affected components SMTP (Operational)

  7. resolved Feb 13, 2026, 02:35 AM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components SMTP (Operational)

Read the full incident report →

Minor February 12, 2026

Increased latency in Broadast sending

Detected by Pingoru
Feb 12, 2026, 02:36 PM UTC
Resolved
Feb 12, 2026, 02:36 PM UTC
Duration
—
Affected: Broadcast Emails
Timeline · 2 updates
  1. investigating Feb 12, 2026, 02:23 PM UTC

    Status: Investigating 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. Affected components Broadcast Emails (Degraded performance)

  2. resolved Feb 12, 2026, 02:36 PM UTC

    Status: Resolved Service has been resumed. Affected components Broadcast Emails (Operational)

Read the full incident report →

Minor February 6, 2026

Slow Broadcast Queue Processing

Detected by Pingoru
Feb 06, 2026, 05:52 AM UTC
Resolved
Feb 06, 2026, 05:52 AM UTC
Duration
—
Affected: Broadcast Emails
Timeline · 2 updates
  1. investigating Feb 06, 2026, 05:35 AM UTC

    Status: Investigating 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. Affected components Broadcast Emails (Degraded performance)

  2. resolved Feb 06, 2026, 05:52 AM UTC

    Status: Resolved Broadcast sending has returned to normal speed. Queue times are back to expected levels. Thank you for your patience. Affected components Broadcast Emails (Operational)

Read the full incident report →

Minor February 3, 2026

Latency increased for all background actions

Detected by Pingoru
Feb 03, 2026, 11:21 PM UTC
Resolved
Feb 03, 2026, 11:21 PM UTC
Duration
—
Affected: General APIDashboardBroadcast Emails
Timeline · 3 updates
  1. investigating Feb 03, 2026, 07:30 PM UTC

    Status: Investigating We have identified an issue with a third-party provider who's responsible for background actions like verifying domains, importing contacts, sending broadcasts and a few other tasks. Transactional email sending is not impacted. Affected components Dashboard (Degraded performance) Broadcast Emails (Degraded performance) General API (Degraded performance)

  2. monitoring Feb 03, 2026, 10:59 PM UTC

    Status: Monitoring The fix has been pushed and we are now monitoring the situation. Affected components Dashboard (Operational) Broadcast Emails (Operational) General API (Operational)

  3. resolved Feb 03, 2026, 11:21 PM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components Dashboard (Operational) Broadcast Emails (Operational) General API (Operational)

Read the full incident report →

Minor February 3, 2026

Increased latency

Detected by Pingoru
Feb 03, 2026, 01:48 PM UTC
Resolved
Feb 03, 2026, 01:48 PM UTC
Duration
—
Affected: Batch EmailsGeneral APIEmail EventsWebhooksDashboardSingle EmailSMTPBroadcast Emails
Timeline · 3 updates
  1. investigating Feb 03, 2026, 11:00 AM UTC

    Status: Investigating We are currently investigating increased latency on all services. At this time, you may experience delays when sending emails via our SMTP service and API. Affected components SMTP (Degraded performance) Broadcast Emails (Degraded performance) Batch Emails (Degraded performance) General API (Degraded performance) Webhooks (Degraded performance) Single Email (Degraded performance) Dashboard (Degraded performance) Email Events (Degraded performance)

  2. monitoring Feb 03, 2026, 11:53 AM UTC

    Status: Monitoring The fix has been pushed and we are now monitoring the situation. Affected components Batch Emails (Degraded performance) General API (Degraded performance) Webhooks (Degraded performance) Single Email (Degraded performance) Dashboard (Degraded performance) Email Events (Degraded performance) SMTP (Degraded performance) Broadcast Emails (Degraded performance)

  3. resolved Feb 03, 2026, 01:48 PM UTC

    Status: Resolved We have resolved the underlying issue and service has been resumed. Affected components General API (Operational) Webhooks (Operational) Single Email (Operational) Dashboard (Operational) Email Events (Operational) SMTP (Operational) Broadcast Emails (Operational) Batch Emails (Operational)

Read the full incident report →

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