This incident has been resolved. Our engineering teams investigated and found that this incident was related to a wider Microsoft issue affecting the delivery of emails to external domains. Microsoft has confirmed that the issue has now been resolved, and we are currently unable to reproduce the problem.
We advise customers not to resend any emails, as the original messages are expected to retry automatically and continue processing without any further action required.
If you continue to experience issues or have any concerns, please contact Click Support for assistance.
Posted Sep 04, 2026 - 14:25 UTC
Investigating
We are aware of an issue currently affecting email send processing for some customers in the EU data centre. Emails are not currently being processed for delivery, resulting in delayed or undelivered email sends.
We recommend that customers do not resend emails at this time, as sends may still process once the issue is resolved and duplicate sends could occur if emails are resent.
Our engineering team is actively investigating the issue and working to restore normal operation as quickly as possible. Further updates will be provided as more information becomes available.