Supported Objects
Email activity is currently available on three standard objects:Why Only These Objects?
People, Companies, and Opportunities are the core relationship objects where email context adds the most value. Email threads are automatically linked based on:- Email address → matched to People records
- Email domain → matched to Company records
- Company relation → linked to Opportunities
Custom Objects
Email tracking is not available on custom objects at this time. If you need email context on a custom object, consider:- Using a relation field to link your custom object to People or Companies
- Viewing email history on the linked People/Company record