Back-up tools for Office 365

When we were using Google Apps a few years back Spanning was the best backup solution we came across and was the insurance for accidentally deleted files in our organization. It has great functionality especially the different options for restoring data and they have released a version for backing up Office 365 data (only Email, Calendar and OneDrive unfortunately). Another contender is Backupify, which started as a consumer backup service but moved into the enterprise space. They offer a backup solution for Office 365 too and have the advantage of backing up folders and SharePoint in addition to Email, Calendar and OneDrive. We have the backup problem on our roadmap, but it has a low priority so we haven't started planning or testing yet, but maybe these options are of interest.