What is the difference between sent and delivered emails in dashboard?

What is the difference between sent and delivered emails in dashboard?

Sent refers to the total mails that have been sent over a particular period of time. Delivered refers to the total mails that were delivered successfully to your recipients along with other details. There can be a difference in count between sent and delivered mails because some of the mails you sent may not have been delivered successfully. Sometimes they won’t be delivered due to bounces