advanced-google-ads-budgets.js

function main() {
    var accountBudgetLimit = 80; // set your account budget limit here
    var accountCampaignsCost = 0;
    var Campaign_List = "['Women Sport Shoes', 'Men Sport Shoes']";
    var Email_Address = "youremail@example.com";
    var campaigns = AdWordsApp.campaigns()
        .withCondition("Name IN " + Campaign_List)
        .get();

    while (campaigns.hasNext()) {
        var campaign = campaigns.next();
        var stats = campaign.getStatsFor("ALL_TIME"); // gets stats for ALL TIME, you may change the date range based on your requirment. Valid values: TODAY, YESTERDAY, LAST_7_DAYS, THIS_WEEK_SUN_TODAY, THIS_WEEK_MON_TODAY, LAST_WEEK, LAST_14_DAYS, LAST_30_DAYS, LAST_WEEK, LAST_BUSINESS_WEEK, LAST_WEEK_SUN_SAT, THIS_MONTH, LAST_MONTH, ALL_TIME
        accountCampaignsCost += stats.getCost(); // gets the cost of the campaign
        Logger.log(campaign.getName() + " = " + stats.getCost());

    }
    Logger.log("sum = " + accountCampaignsCost);

    if (accountCampaignsCost >= accountBudgetLimit) { // If the total costs of the campaign has reached or exceeded the specified limit, pause the camapaigns
        Logger.log("Budget has exceeded the limit!");
        var campaignIterator = AdWordsApp.campaigns()
            .withCondition("Status = ENABLED")
            .get();
        while (campaignIterator.hasNext()) {
            var campaign = campaignIterator.next();
            campaign.pause();

            Logger.log("Pausing campaign " + campaign.getName() + "...");
        }
        MailApp.sendEmail(Email_Address,
            'ِYour Campaigns paused!',
            'Your campaigns reached the specified budget and thus campaigns were stopped.');
    } else if (accountCampaignsCost >= (accountBudgetLimit * 0.9)) { // Checks if the total cost of the campaigns has reached 90% of the specified limit

        MailApp.sendEmail(Email_Address,
            'Your advertising budget is running out!',
            'More than 90% of the specified budget is spent on your account.'); // notifies you with an email when total cost of the campaigns has reached 90% of the specified limit.

    } else {
        Logger.log("Total spending of campaigns has not yet reached the account budget limit.");    }
}

Thanks for sharing. Finally working (out of the box) code!