Einstein Activity Capture: Email Sync may not work after migration to "Sync Email as Salesforce Activity" for legacy orgs created before 2022

Steps to Resolve

Please verify your org meets the conditions above. To fix the email sync issue, follow these steps.

1. From Setup, enter Einstein Activity Capture in Quick Find, then select Settings.
2. On the Settings tab, toggle off Einstein Activity Capture.
3. Wait about 5 minutes, then refresh the page.
4. Toggle on Einstein Activity Capture.
5. Configure Einstein Activity Capture for Google or Microsoft. You cannot use both providers simultaneously.
6. If using user-level authentication, ask users to connect their email accounts to Einstein Activity Capture.

Selecting 180 days for the Email Sync filter during configuration (Step 5) allows each synced user to import up to 50,000 historical emails from the preceding 180-day period.