Announcement for mail system maintenance on August 14, 2018 (Tue.)

Thank you for choosing Mackerel.

This is an announcement to notify that the mail system that Mackerel uses will be under maintenance.

  • Date and time: August 14th, 2018 (Tue) 9:00 p.m. - 1:00 a.m. on August 15th, 2018 (Wed) JST
  • Range of impact: All mail sent from Mackerel (user registration, alert notifications, etc.) may face delayed delivery during the above time period
  • Reason for Maintenance: This maintenance period was scheduled by SendGrid, the mail delivery service used by Mackerel. For details, please visit SendGrid’s status page (

Please refer to SendGrid’s status page mentioned above for information and updates on the mail system during the maintenance period.

We apologize for the inconvenience.

Thank you for your cooperation and thank you for choosing Mackerel.