You can track how many times your messages have been opened using the Manage Reports section of the Adopia account page. 

Click Manage Reports

Under Manage Reports, you can select which options you’d like to see for your reporting. Under Option select what type of message (All, Deleted or Non-Deleted), 

select the category of your message (Broadcasts, Autoresponder, Split Test, Triggers), select the mailing list and the message. You can choose which dates

you’d like to see statistics for your messages for by choosing the dates and clicking View. You are able to view your number of mails you sent, opened, clicked and 

complained about.