Email Opens Not Tracked When Using Email Alias with Salesforce Inbox.

When a user sends an email using an email alias, email opens are not tracked as expected in Salesforce. This issue occurs when both Salesforce Inbox and Einstein Activity Capture (EAC) are enabled, but email capture is disabled.

Steps to Reproduce

1. Create an email alias in your Outlook account.
2. Connect the email account to Outlook from Settings > Connected Accounts.
3. Ensure that External Email Tracking is enabled in Inbox settings within Salesforce Setup.
4. Compose and send an email using the email alias as the "From" address.
5. Open the received email.
6. Check Salesforce – the email does not show as "Opened."

Possible Causes

• Email tracking is not supported with Email Alias.