This question is the inverse of another question. In corporate gmail, I know how to view a list of members for a particular group, but how do I perform the reverse of this? That is, how do I find out which groups John Doe belongs to?

Use case - I need to send an email with a database question. I know that John Doe is a Database Administrator, but I'd rather email the group of DBAs instead of just John. In Outlook, this could be accomplished by double-clicking on John's name; then his email groups would be listed under Memberships (or something like that).


I've never found a good solution to this. Instead, I've used a work around. I have a script that gives me a full list of all of the groups I can access and lists of their members. When I run "main" it creates a Google sheet called "Group List". Although it's not refined, it gets the job done.

function main() {
  var doc = SpreadsheetApp.create("Group List");
  var groups = GroupsApp.getGroups();
  for (var i = 0; i < groups.length; i++) {
    var group = groups[i];
    var gemail = group.getEmail();
    if (group.getEmail().indexOf("my-email-domain") > 0) {
        listGroupMembers(doc, group)


function listGroupMembers(doc, group) {
  var GROUP_EMAIL = group.getEmail();
  try {
    var users = group.getUsers();

     var s = "Group " + GROUP_EMAIL + " has " + users.length +
     " members: ";
     for (var i = 0; i < users.length; i++) {
       var user = users[i];
       var user_email = user.getEmail();
       s = s + user_email + ", ";
       doc.appendRow([GROUP_EMAIL, user_email]);
  catch(err) {
    Logger.log("ERROR: " + err.message);

I've looked in Gmail, Google Contacts, Google Plus and Groups and couldn't find this information. As a Google Apps Admin, however, I can lookup the user and see their groups from their User Account Page.

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If someone else has a better answer I would love to know as well.

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