Heysender experienced a minor incident on December 4, 2025, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- resolved Dec 04, 2025, 06:01 AM UTC
Type: Incident Duration: 9 hours and 46 minutes Affected Components: Incoming SMTP, Outgoing SMTP, API, App Dec 4, 13:09:17 GMT+0 - Resolved - This incident has been resolved. Dec 4, 06:11:19 GMT+0 - Resolved - All systems seem to be online again. We're keeping an eye on things but from here it seems to be a network issue at our hosting supplier resulting in about 10 minutes of downtime. We will update when we know more. Dec 4, 13:11:11 GMT+0 - Postmortem - The issue was caused by a firewall issue at our hosting provider. It was solved with 10 minutes of total downtime to the system. Dec 4, 06:01:33 GMT+0 - Investigating - We're currently investigating what seems to be an issue connecting to smtp.heysender.com. New status within 30 minutes. Dec 4, 06:05:04 GMT+0 - Investigating - The issue also affects the app, API and outgoing SMTP. We're still investigating.