We can convert secure string to String then what is the security behind this credential type.

SMTP activity does not take secure string in a password property. What I did as a workaround is created another extra string variable for password like “StrPassword” and it Solved my Problem. Follow these steps Create a Variable StrPassword Then taken a assign activity and assign value for StrPassword And in value typed the string as “new System.Net.NetworkCredential(string.Empty, password).Password” Where “password” contains your secure string that you get from orchestrator assests or windows credentials..