ClickPanda incident

Delayed Delivery of Email Marketing Campaigns to Microsoft Mailboxes

Major Resolved View vendor source →

ClickPanda experienced a major incident on May 22, 2025 affecting Email Delivery Backend Service, lasting 1d 1h. The incident has been resolved; the full update timeline is below.

Started
May 22, 2025, 01:31 PM UTC
Resolved
May 23, 2025, 03:07 PM UTC
Duration
1d 1h
Detected by Pingoru
May 22, 2025, 01:31 PM UTC

Affected components

Email Delivery Backend Service

Update timeline

  1. investigating May 22, 2025, 01:31 PM UTC

    Our email delivery service is currently experiencing delays in sending marketing messages to Microsoft domains (Hotmail, Outlook, Live) due to rate limiting, causing campaign emails to reach end recipients later than expected.

  2. resolved May 23, 2025, 03:07 PM UTC

    Deliveries of marketing campaigns to Microsoft via SMTP have been normalized. Please note that sending large campaigns after a period of inactivity may cause temporary delivery issues. We are monitoring the situation to ensure stability and improve send performance.