Thanks Daniel.
I can see
http://social.technet.microsoft.com/wiki/contents/articles/31210.sharepoint-2013-get-user-details-from-person-or-group-field-using-rest-api.aspx
I can get only users from that column and thats fine. But now I am not able to store them and their email in dictionary.
Now I just want all users from users column in sharepoint designer rest API with their emails.
this returns result but I am not able to get d/result(0)/Email(because of multiple users-it works for single user) I can get subject and other columns.
/_api/web/lists/GetbyTitle('ourlist')/items?$select=EmailBody,Subject,ToUsergroup/EMail,CCUsersGroups/EMail&$expand=ToUsergroup/Id&$expand=CCUsersGroups/Id
From below example-
http://stackoverflow.com/questions/28104514/how-to-get-titles-of-multiple-people-or-group-columns-in-list-using-rest-api
for(var i = 0; i< data.d.AssignedTo.results.length;i++) {
console.log(data.d.AssignedTo.results[i].EMail);
console.log(data.d.AssignedTo.results[i].Name);
}
so in Designer I tried d/MyUserColumn/result(0)/EMail but did no