Groupable|m2 allows users to view their Sent Email History. This will include any emails sent from the Labels/Emails Bulk Emailing feature.
Find the View Sent Emails link from the Members Menu:
Your menu may look different based on which type of user account you have:
Click View Sent Emails to be brought to the following Email Statistics screen:
The top email shows zero emails sent. The lower email shows 430 contacts buffered, 5 undeliverable, 1 in draft form, and 424 delivered.
Click the "expand" icon on the left to see the email details in a Classic screen.
Sent emails will display the list of Valid Email Addresses, Invalid Email Addresses, and the Sender, Subject, and Body of the email:
If you have not yet sent this email, when you click the expanded view icon, you'll be brought to a "send email" screen as shown below. The same email information will be provided, but you'll have the additional options to select edit or send email.