Intellistack incident
Formstack Forms: Confirmation Email Delivery Issues
Resolved after 1 hour 7 minutes, affecting Email System (SendGrid), on August 17, 2026.
This issue has been resolved. Confirmation emails to Microsoft-hosted email addresses are now being delivered as expected.
Affected components
Update timeline
- investigating Aug 17, 2026, 11:57 AM UTC
We are currently investigating an issue where some customers may receive unexpected account deactivation notifications related to bounced confirmation emails. Our team is actively working to identify the cause. We will provide additional updates as more information becomes available.
- monitoring Aug 17, 2026, 12:21 PM UTC
The issue affecting confirmation email delivery to Microsoft-hosted email addresses has been resolved. Confirmation emails should now be delivered as expected moving forward. We will continue to monitor for any additional issues.
- resolved Aug 17, 2026, 01:04 PM UTC
This issue has been resolved. Confirmation emails to Microsoft-hosted email addresses are now being delivered as expected.
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