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Turn On HTML Email Tracking for Emails Sent from Your Company
See if and when customers open the emails that you send to them through Salesforce. email sent through Salesforce. HTML email tracking uses a transparent 1x1 pixel tracking image that’s stored on the Salesforce server. When a mail program opens the HTML email and loads the image, Salesforce registers the email as viewed and updates the HTML email status accordingly. This feature applies to all emails sent through Salesforce. You can’t turn it on or off for individual emails or customers.

