Add full API for alerts
Add full API for alerts so you can create, edit and delete alerts for any user through CSOM/REST
Thank you for your input. We are happy to share that Alert CSOM APIs have been now included in the January 2017 CSOM release. Please check more details from following blog post – https://dev.office.com/blogs/new-sharepoint-csom-version-released-for-Office-365-january-2017.