IDEXX incident
Mass Communications in Vello not sending to Microsoft email addresses
Resolved after 35 days 3 hours, affecting Neo Vello and ezyVet Vello and 1 more, on December 23, 2025.
This incident is now resolved. However, we continue to monitor our email deliverability closely.
Affected components
Update timeline
- investigating Dec 23, 2025, 04:50 PM UTC
We are currently investigating an issue where Vello Mass Communication emails are not sending to Microsoft email addresses (@live.com, @outlook.com, etc.). Other transactional emails such as reminders are still sending appropriately.
- monitoring Jan 14, 2026, 10:31 PM UTC
We have identified the root cause and are continuing to apply fixes and improvements. We are monitoring the system closely.
- resolved Jan 27, 2026, 07:58 PM UTC
This incident is now resolved. However, we continue to monitor our email deliverability closely.
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