Outage in MailerSend

We're experiencing a technical issue resulting in a 401 error increase

Resolved Minor
October 25, 2023 - Started about 2 years ago - Lasted 4 minutes
Official incident page

Incident Report

We are experiencing a technical issue that might result in 401 errors while using the API. All of our engineers are working hard to fix the issue as soon as possible. We understand that you have emails to deliver and an apology will not mean much right now. But we wanted you to know that we are 100% focused on fixing the issue and ensuring this doesn’t happen in the future. Thank you for your understanding, The MailerSend team
Components affected
MailerSend Email sending API

Need to monitor MailerSend outages?

One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.

Latest Updates ( sorted recent to last )
RESOLVED about 2 years ago - at 10/25/2023 10:01AM

The incident was solved. You should no longer receive 401 errors when calling the API.

INVESTIGATING about 2 years ago - at 10/25/2023 10:01AM

We are experiencing a technical issue that might result in 401 errors while using the API. All of our engineers are working hard to fix the issue as soon as possible.

We understand that you have emails to deliver and an apology will not mean much right now. But we wanted you to know that we are 100% focused on fixing the issue and ensuring this doesn’t happen in the future.

Thank you for your understanding,
The MailerSend team

Status Aggregator for All Your Third-Party Services

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 4600 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook