Email logs are CSV files that contain information about all email sent through Salesforce over the last 30 days. CSV file contain Date/Time, Mail Event, Recipient, Sender, Status and Errors.
Setup > Logs > Email Log Files
Email Log Page > Request an Email Log
Email Log Request page
In this page we have Start Time and End Time. The difference between the start time and end time is 7 days. If we want the email log request for additional time period then we need to create a new email log request. These email logs are available for 30 days for that email address.
Include only emails that are addressed to or from: This option function as a filter. Enter the email “to or from” for which you want the email log.
Delivery Notifications: Enter the email to receive the notification when the email log request is complete.
Pending Email Log Requests: Displays the pending log request.
Email Logs: Completed email log > click Download (Zip file is downloaded which contains email logs in the CSV file). CSV file contains a maximum 100,000 records. If 500,000 logs are present than 5 different CSV files are created in a zip file.