"Lightning Sync, Salesforce for Outlook, and Email to Salesforce let you integrate the work you do from your email and calendar applications with Salesforce. Microsoft or Google items that those Salesforce products can’t automatically match to Salesforce records appear in My Unresolved Items."
In order to view, edit or turn off My Unresolved Items please follow instructions below:
1. While logged in to Salesforce, click on your avatar in the upper right corner and choose 'settings'.
2. On the left hand side of the screen select the drop down 'email' and then 'My Unresolved Items'.
3. In the upper right corner click on 'Email to Salesforce Settings'.
4. From here you can choose to un-select the option to create a task for 'My Unresolved Items'