In SFMC, one of the captured data is complaints (in reporting and data view).
my understanding is the complaints in SFMC means subscribers who mark the received email in their inbox as spam, is that correct understanding?
Does SFMC automatically unsubscribe subscribers who complain?
Is it possible to tell which subscribers marked our email as spam? If yes, how/where?
This only happens if the ISP participates in a FBL
ISP (Internet Service Provider) Feedback Loops (FBLs) are mechanisms that allow ISP users (end subscribers) to click on the “report spam” or “this is spam” button in their email client, which tells their ISP that they find a given email message to be unwanted.
After an end subscriber clicks on the “report spam” or “this is spam” button in the user interface of a given email client, an “FBL complaint” is sent back to Salesforce Marketing Cloud for processing. Upon receipt of this FBL complaint, the recipient who lodged the complaint will be unsubscribed from mailings from that client. The complaint is logged and the recipient will show up in send stats as a complaint and as an unsubscribe.
You could review the _complaint dataview to see which has been reported
Use this SQL script to lookup the dataview to see all your complaints. Run this in Query Studio or setup an automation to put this data in a DE to view.
SELECT
c.SubscriberKey , c.JobID , j.EmailName , c.BatchID , c.EventDate as ComplaintDate , s.EventDate as SentDate , c.IsUnique , c.Domain
FROM _Complaint AS c
JOIN _Job j on j.JobID = c.JobID
JOIN _Sent s on s.JobID = c.JobID<
AND s.ListID = c.ListID
AND s.BatchID = c.BatchID
AND s.SubscriberID = c.SubscriberID
