You can view sent emails in several places. The full Sent Email log can be accessed from the top navigation bar under Sharing.
Keep in mind, you will only have access to emails sent by your user, no other users. Clicking an email will show a preview of the email contents.
Here are additional places to access sent emails:
- Object Info > Sent Emails
- Contact Info > Sent Emails
- Offer Info > Sent Emails
You can also access sent emails from your associated email's Sent folder.