You can get details about your email performance through the Reporting API.

These are the statuses you will be able to see:

Status TypeDescriptionpendingThe message has been sent to an email provider.acceptedThe message has been accepted by the email provider.sentThe remote mail transfer agent acknowledged a message.openedThe recipient has opened the email. This only works for HTML content.clickedThe recipient clicked a tracked link in the email. It only works for HTML content with HREF-defined links.bounceThe remote mail transfer agent has rejected the email.spam_complaintThe message has been classified as spam by the recipient.out_of_boundedThe message has not been delivered to the recipient.delayedThe remote mail transfer agent rejected the email temporarily.receivedThe message has been received from the sender.