Can I see the SPAM complaints?

When you send an email campaign, there is the possibility that some of the subscribers who receive it decide to mark it as SPAM. 

If you want to see if any of your subscribers have marked your campaign as SPAM, you can do so by going to "Stats - Campaign Stats". By clicking on the "View stats" button, you will be able to access the data report for the campaign you have selected. Once inside, you will be able to see how many SPAM reports the campaign has had and the percentage it represents in relation to the total number of recipients.

Additionally, if you consult one of your contact lists, you can filter them according to their status. In the top drop-down menu, if you select the " Suppressed" option, you will be able to see, among others, the contacts that have been deactivated because they have marked one of your mailings as SPAM. 

Keep in mind that when this happens, i.e. one of your subscribers marks a mailing as SPAM, the tool automatically deactivates it so that they will no longer receive any of the communications you send to that list of subscribers. 
Receiving SPAM complaints, if it is something that happens continuously, can affect your reputation as a sender and cause your subscribers to receive your mailings in the spam folder. In addition, ISPs may block you and your mailings may not be delivered. To prevent this from happening, it is very important to manage your database well, i.e., include only those addresses that you know have given you their consent to send communications, do not buy and/or rent lists and check your database to make sure you have it in good condition. In the same way, make sure that the content of your newsletters is of interest to your subscribers to avoid not only unsubscribes, but also that they may mark you as SPAM.