The SharePoint SendEmail API (SP.Utilities.Utility.SendEmail) was retired on October 31, 2025. Custom solutions using this API no longer send emails.
ℹ️
Key Facts:
Retirement date: October 31, 2025
Affected: Custom code, SPFx web parts, some Power Automate flows
Not affected: SharePoint workflows, out-of-box SharePoint emails
Replacement: Outlook connector or Microsoft Graph SendMail API
Detection: Check Purview audit logs for "SendEmailApiInvoked" events
Retirement date: October 31, 2025
Affected: Custom code, SPFx web parts, some Power Automate flows
Not affected: SharePoint workflows, out-of-box SharePoint emails
Replacement: Outlook connector or Microsoft Graph SendMail API
Detection: Check Purview audit logs for "SendEmailApiInvoked" events
The retirement affects custom solutions that send emails via SharePoint's REST or CSOM APIs. Standard SharePoint notification emails and SharePoint Designer workflows continue to work. Organizations should audit their custom code and migrate to Microsoft Graph for email functionality.
Sources: Microsoft 365 Developer Blog · MC921752
