Hi,

If you deliver the file using a Salesforce HTML template, the 'opens' can be tracked inside of Salesforce in the email activity. Unfortunately this is limited to just the email reads, not the document opens. 

Best,

How do I go about using the Salesforce HTML template? I'm using an attachment in the emails.

Hello,

I've been using Docgen to email PowerSchool reports with final grades to students. Is there any template to check the time for opening documents? Thank you.

Stefan

FAQ: Guidelines for Configuring Deliverability Settings for Emails Sent from Salesforce

https://help.salesforce.com/articleView?id=emailadmin_deliverability essaydune