Yoxel Sync tries to automatically find matching CRM contacts for your active email conversations but sometimes no matching contact or lead is found. Yoxel Sync will tag all such email threads in Gmail and Office365 for you so that you could easily find and examine them.
1. In Gmail examine the 'YoxelResolve' label/folder.
2. In Office365 web client search for 'Category:YoxelResolve'
3. In Outlook (desktop) apply the Category 'YoxelResolve' filter