Unable to Upgrade to "Sync Email as Activity" Due to Unassigned Einstein Activity Capture (EAC) Users

This article explains when and how administrators can upgrade to the "Sync Email as Activity" feature once unassigned Einstein Activity Capture (EAC) users can be added to a configuration.

Feature Availability

Starting in early May 2026, a new feature will be introduced as part of the Spring '26 release that allows administrators to add unassigned users directly to an Einstein Activity Capture (EAC) configuration. For more details, see the Spring '26 Release Notes.

Note: This feature rollout will be staggered, beginning with Sandbox environments in early May 2026, followed by Production orgs. Release dates are subject to the staggered rollout schedule; therefore, a firm date for each specific org is not available.

Steps to Upgrade

After the feature becomes available in May 2026, follow these steps to upgrade users to the "Sync Email as Activity" functionality:

1. Navigate to the EAC Setup page and, in the new UI, select "users not in a configuration" to download the complete list of eligible users. See the image below for reference — disregard the date shown in this screenshot; the actual deadline will be unique to each org. If users are not manually added to a configuration by your specific cutoff date, they will be added automatically. To prevent specific users from being auto-assigned, remove their EAC licenses before the deadline.

   

2. Create a new EAC configuration with Email toggled ON (configure the Events and Contacts settings as needed for your org).
3. Add the previously downloaded list of users to this new configuration and save.
4. Once the configuration is saved, a new UI section titled "Update Einstein Activity Capture and Migrate Email Data" will appear. This section enables the upgrade to the Sync Email as Activity feature.

Refer to the Sync Email as Activity Migration Help Article for a detailed overview of the upgrade process and impact.