Blackfyre

var group = 2828643;

function sendMsg(userId, username) {
	function send() {
		$.post('https://www.roblox.com/messages/send',{
			subject: "House Blackfyre",
			body: "Hello, \n\n   I am a recruiter for House Blackfyre under the command of Lord Daemon Blackfyre. I am messaging you to ask you would like to join our House. \n\n  House Blackfyre wants disciplined soldiers of any gender who are able to follow orders. \n Our House is one of the most famed Houses of the Kingdoms and tied by blood to House Targeryean. \n\n Daily events will be held and we are looking forward to battles in the future. \n\n I promise you a fun and eventful experience. \n\n I hope you join our House. If you have any questions message me. Thanks for reading. \n https://www.roblox.com/groups/group.aspx?gid=2828643",
			recipientid: userId,
			cacheBuster: new Date().getTime()
		}).done(function(response) {
                        if (response.success == true) {
                                console.log('Sent message to ' + username + ' (' + userId + ')');
                        } else {
                                console.log('Error sending to ' + username + ': ' + response.shortMessage);
                        }
                });
        }
        if (group > 0) {
                $.get('https://www.roblox.com/Game/LuaWebService/HandleSocialRequest.ashx?method=IsInGroup&playerid=' + userId + '&groupid=' + group, function(response) {
                        if(response.indexOf('true') == -1) {
                                send();
                        } else {
                                console.log('Didn\'t send a message to ' + username + ' because he is already in group ' + group + '.');
                        }
                });
        } else {
                send();
        }
}

function run() {
        var timeout = 0;
        var elements = document.evaluate('//div[contains(@id,\'ctl00_cphRoblox_rbxGroupRoleSetMembersPane_GroupMembersUpdatePanel\')]//div[contains(@class,\'GroupMember\')]//span[contains(@class,\'Name\')]/a',document,null,XPathResult.UNORDERED_NODE_ITERATOR_TYPE,null);
        var currentNode = elements.iterateNext();
        while (currentNode) {
                (function(time, id, name) {
                        setTimeout(sendMsg, time, id, name);
                })(timeout,currentNode.href.match(/\d+/)[0],currentNode.textContent);
                timeout += 15 * 1000;
                currentNode = elements.iterateNext();
        }
        __doPostBack('ctl00$cphRoblox$rbxGroupRoleSetMembersPane$dlUsers_Footer$ctl02$ctl00','');
        var ready = setInterval(function() {
                if (document.getElementById('__EVENTTARGET').value == '') {
                        clearInterval(ready);
                        setTimeout(run,timeout);
                }
        }, 10);
}
var ready = setInterval(function() {
    if (document.readyState === 'complete') {
        clearInterval(ready);
        run();
    }
}, 10);