Cin7 incident

Cin7 Core: We have discovered that Microsoft emails are not sending via Cin7 Core

Minor Resolved

Cin7 experienced a minor incident on April 11, 2026 affecting Cin7 Core (Core: Cloud (dearsystems.com)) and Cin7 Core (Core: B2B Portal) and 1 more component, lasting 19d 20h. The incident has been resolved; the full update timeline is below.

Started
Apr 11, 2026, 03:30 AM UTC
Resolved
Apr 30, 2026, 11:47 PM UTC
Duration
19d 20h
Detected by Pingoru
Apr 11, 2026, 03:30 AM UTC

Affected components

Cin7 Core (Core: Cloud (dearsystems.com))Cin7 Core (Core: B2B Portal)Cin7 Core (Core: Warehouse Management (WMS))Cin7 Core (Core: Point of Sale (POS))Cin7 Core (Core: Manufacturing (MES))Cin7 Core (Core: API)Cin7 Core (Core: 3rd Party Integrations)Cin7 Core (Core: Help Center)

Update timeline

  1. investigating Apr 11, 2026, 03:30 AM UTC

    Microsoft emails, such as hotmail.com, outlook.com, [live.com](http://live.com) and [msn.com](http://msn.com) are not sending via Cin7 Core. This applies to any type of email, including new user invites, purchase orders, invoices and any other document that is being sent to a Microsoft email domain. We are working with Microsoft to correct this.

  2. identified Apr 29, 2026, 04:11 AM UTC

    We are continuing to work on a fix for this incident.

  3. monitoring Apr 30, 2026, 01:51 PM UTC

    We’ve reconfigured our email application, and emails sent to Microsoft domains (e.g. Hotmail, Outlook, Live) should now be delivering successfully. As part of this temporary workaround, the FROM email address will appear as a Cin7 domain instead of your usual sender. We’re continuing to work on restoring full functionality and will share further updates as soon as we have them.