Cin7 Core: Email Delivery Failure

Update timeline

1. investigating May 28, 2026, 08:47 PM UTC

   We are investigating an issue where emails are successfully triggered in Core but failing to deliver to end customers.

2. monitoring May 29, 2026, 12:38 AM UTC

   We have implemented a fix and are currently monitoring the result. Emails should now start sending again.

3. monitoring May 31, 2026, 09:30 PM UTC

   While the fix has ensured that emails are flowing normally, "send from/reply to" custom domains will not work until a further fix is implemented. Meanwhile, in order to send emails currently, you need to change your [Send emails from settings](https://help.core.cin7.com/hc/en-us/articles/9034490726415-Introduction-to-document-and-email-templates#heading-7). This will change the **From** field to a Cin7/Dear email address; 1. Select **Settings** from the main menu, then **General settings**. 2. Go to the **Organization** section. 3. Look for setting **Send emails from** and select an available option: * Company's billing contact (sent from the system) * Currently logged-in user (sent from the system) We apologize for any inconvenience and will update here when this issue is fully resolved.

4. identified May 31, 2026, 09:53 PM UTC

   We are continuing to work on a fix for enabling customers to use the send from functionality.

5. resolved Jun 02, 2026, 07:29 PM UTC

   We have implemented a fix and have confirmed that email delivery and send from / reply to functionality is now fully restored. Thank you for your patience while we worked on this.