We deeply apologize for the inconvenience and concern caused by multiple intermittent incidents in Mackerel's labeled metrics feature between May 28, 2026, and June 23, 2026. This report provides details regarding the overview of these inc…

Hello! This is Igarashi (id:masarasi) from the Mackerel CRE team. Here are this week's updates. Part of the incident and maintenance status page will now be displayed in Japanese Added Labeled Metrics to the status page components Empty se…

Thank you for choosing to use Mackerel. The Mackerel Terms of Service and Privacy Policy will be revised on 1st October 2026. The contents of the revisions are detailed below. Terms of Service Privacy Policy Terms of Service Please note th…

Thank you for your patience! On Thursday, July 16, 2026, we released Mackerel's log feature as an open beta. For background on this release, please check out our earlier announcement post. mackerel.io In this post, we’ll cover terms of use…

Hello, This is id:yohfee from the Mackerel CRE team. Here are the details of this week's updates. MDOT Now Supports Logs Navigate Graph Time Ranges Using the Browser's "Forward" and "Back" Buttons Retrieve Check Monitor Lists via Public AP…

Please be advised that our support desk will be closed during the period below. Holiday Closure Period From Monday, August 10, 2026, to Friday, August 14, 2026 Regarding Inquiries Inquiries received during the closure period will be addres…

You can now select the series to display for host graphs and service metric graphs within the custom dashboard graph widget settings.

In April of this year, we announced that we would be providing a log feature for Mackerel. In that article, we mentioned that we were "aiming for a release in summer to fall 2026," and we are now pleased to announce that the open beta will…

Hello. I'm id:RyuGoo, Sub-Director of the Mackerel team and head of product management. Mackerel already supports OpenTelemetry-format metrics and traces. To further strengthen observability, we are developing a new feature that adds logs …

Hello. This is Sudo (id:do-su-0805) from the Mackerel Team CRE. Here are the details of the latest updates. Detailed information for each route is now available from the APM's HTTP Server tab Added a column to the Notification groups API r…

Hello! This is Toya (id:KGA) from the Mackerel CRE team. Here are the latest updates. OK notifications are now sent when alerts are closed due to host retirement Series selection is now preserved when you change the display period in a que…

Hello, this is Mackerel team CRE id:masarasi. I'm pleased to share the details of this update. AWS Integration for Amazon Connect Now Supports Host Filtering by Tags Notification Channel Registration API Now Allows Choosing Whether to Add …

Hello, this is Mackerel team CRE id:yohfee. I'm pleased to share the details of this update. Added Aurora role and read replica information to RDS host details in the AWS Integration Improved metric retrieval for Step Functions in the AWS …

Mackerel's External URL monitoring now supports IPv6. You can select the version you want to use under "IP Version" at the bottom of the External URL monitoring settings screen.

Hello! This is Sudo (id:do-su-0805) from the Mackerel Team CRE. I'm here to share the details of our latest update. Improved searchability for high-cardinality metrics in Metric Explorer Trace and span times now include milliseconds APM st…

Thank you for using Mackerel. We are currently working on IPv6 support for Mackerel. Recently, we announced IPv6 support for external URL monitor, and today we would like to inform you about IPv6 support for the Mackerel web console and AP…

Please be advised that our support desk will be closed during the period below. Holiday Closure Period From Wednesday, April 29, 2026, to Thursday, May 7, 2026 Regarding Inquiries Inquiries received during the closure period will be addres…

We are currently working on adding support for IPv6 in Mackerel and will soon be releasing IPv6 support for external monitoring as an initial release. if an external monitoring alert is still opened, you may receive a new notification rega…

Hello! This is Toya (id:KGA) from the Mackerel CRE team. I'm pleased to share the details of this update. Client tokens for posting traces from web frontends and mobile apps now available Remaining time until snooze release is now visible …

Thank you for using Mackerel. Due to a database version upgrade, the systems related to the APM and Trace functions will be temporarily suspended on the following schedule. We apologise for any inconvenience caused to users, and thank you …

Hello, this is Mackerel team CRE's id:masarasi . I'm pleased to share the details of this update. Estimated span usage is now available as a labeled metric You can now "Snooze" issue notifications Improved Alert Email Content for Query Mon…

Hello! This is id:yohfee from the Mackerel CRE team. I'm excited to share the details of our latest update. Filter by status in Span Detail Search for Trace Details Improved visibility for Event and Link tabs in Trace Details Scope tab in …

You can now change the width of the sidebar in the Mackerel web console by dragging.

Hello, this is Sudo (id:do-su-0805) from the Mackerel CRE team. We would like to share the details of our first update of 2026. We appreciate your continued support this year. You can now search by “Status” in the trace screen filter condi…

Hello! This is Toya (id:KGA) from the Mackerel Team CRE. Here are the details of this update. Added installation scripts for Mackerel Distro of OpenTelemetry (MDOT) Collector deb/rpm packages [Announcement] Email Notification Channel API w…

We hereby report the overview, cause, and future recurrence prevention measures for the metric loss incident that occurred on Mackerel on November 6, 2025.

Hello! This is Igarashi (id:masarasi) from the Mackerel Team CRE. Here are the details of this update. The Notification Channel API Now Supports Updating Settings An API to Retrieve Traces as a List Has Been Released Trace Search and More …

Please be advised that our support desk will be closed during the period below. Holiday Closure Period From Saturday, December 27, 2025, to Monday, January 5, 2026 Regarding Inquiries Inquiries received during the closure period will be ad…

Hello! This is Takahashi (id:yohfee) from the Mackerel CRE team. Here are the details of our latest updates. No-Signup Demo Experience now available Mini-map added to Trace Details for improved investigation efficiency Selectable Metrics n…

We have released the Mackerel OpenTelemetry Collector (v0.2.0), which allows you to easily send OpenTelemetry telemetry signals to Mackerel simply by setting the Mackerel API key as an environment variable!