We need to call external REST API after sending email in journey builder. Salesforce suggested using custom activity.
I looked into documentation and found very confusing or on high end development skills.
Before proceeding further I need to ask few questions which I am not sure.
Build Journey and send emails.
After sending email update a remote system using REST API with email details e:g email, subscriber key, date time email sent and few other details which saved in Data Extension.
After some time period (1 day) update same remote system if user have opened/not opened/clicked etc.
As I said at beginning I have looked into custom activity documentation and found it very difficult to follow, I am not sure about inArguments/outArguments , what are these for?
Would any of you please guide me if it is possible at fist instance?