All Systems Operational

About This Site

MailerSend is a cloud-based transactional email system built for developers, but designed so your entire team can use it.

Uptime over the past 90 days. View historical uptime.
MailerSend APP ? Operational
90 days ago
100.0 % uptime
Today
Website ? Operational
90 days ago
100.0 % uptime
Today
Inbound routing ? Operational
90 days ago
100.0 % uptime
Today
Email sending Operational
90 days ago
99.97 % uptime
Today
Email sending API Operational
90 days ago
99.93 % uptime
Today
Bulk endpoint Operational
90 days ago
100.0 % uptime
Today
SMTP ? Operational
90 days ago
99.93 % uptime
Today
Deliverability rate ? Operational
90 days ago
100.0 % uptime
Today
Delivery time ? Operational
90 days ago
100.0 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Sep 19, 2025

No incidents reported today.

Sep 18, 2025

No incidents reported.

Sep 17, 2025

No incidents reported.

Sep 16, 2025

No incidents reported.

Sep 15, 2025

No incidents reported.

Sep 14, 2025

No incidents reported.

Sep 13, 2025

No incidents reported.

Sep 12, 2025

No incidents reported.

Sep 11, 2025

No incidents reported.

Sep 10, 2025

No incidents reported.

Sep 9, 2025
We're experiencing a technical issue - email delivery delay
Postmortem - Read details
Sep 11, 08:29 UTC
Resolved - Emails are now being processed without delays. We're keeping a close eye on the situation and are ready to intervene for any new events. Content tracking is still disabled until further notice.
Sep 9, 16:46 UTC
Monitoring - We are currently experiencing delays in email processing for the MailerSend project. Our team has identified a technical issue that is slowing down the dispatch of outgoing emails, resulting in a backlog and delayed delivery for some users.

We have taken immediate action to reduce system load, and email processing speeds are gradually improving. However, some customers may continue to see slower-than-usual email delivery as we work to fully resolve the issue. We also had to disable content tracking for the time being.

We are actively monitoring the situation and will provide further updates here as we make progress. We apologize for any inconvenience and appreciate your patience.
Sep 9, 13:41 UTC
Update - We are continuing to investigate this issue. Email delivery delay is currently 30+ minutes.
Sep 9, 11:50 UTC
Update - We are continuing to investigate this issue.
Sep 9, 11:47 UTC
Investigating - We are experiencing a technical issue that might cause some delays while sending emails. All of our engineers are working hard to fix the issue as soon as possible.


Thank you for your understanding,
The MailerSend team
Sep 9, 10:00 UTC
Sep 8, 2025

No incidents reported.

Sep 7, 2025

No incidents reported.

Sep 6, 2025

No incidents reported.

Sep 5, 2025

No incidents reported.

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