Microsoft has announced the retirement of the SharePoint SendEmail API (SP.Utilities.Utility.SendEmail), which is utilized to send internal SharePoint emails, on October 31, 2025. This means that all email notifications sent through this method will stop working. This change affects the Lightning Forms and Lightning Tools Actions “Send internal email” action that has used this method. The action “Send internal email” will no longer work in SharePoint Online after October 31, 2025.
To maintain send email functionality, you will need to migrate “Send internal email” actions to the “Send email” action, which makes use of the Microsoft Graph Mail.Send API instead.
