function forwardMail() {
    let data = SpreadsheetApp.getActiveSheet().getRange("A2:B11").getValues();
    const forward = (message, email) => {
        return new Promise(resolve => {
            setTimeout(() => {
                let subject = message.getSubject();
                message.forward(email, { subject: subject });
            }, 0);
        });
    };
    const processMessages = (thread, email, label) => {
        let p = Promise.resolve();
        let messages = thread.getMessages();
        for (let y in messages) {
            p = p.then(() => forward(messages[y], email));
        }
        return p.then(() => thread.removeLabel(label));
    };
    const processRow = row => {
        let name = row[0].toString();
        let email = row[1].toString();
        let label = GmailApp.getUserLabelByName(name);
        if (label && email != "") {
            let threads = label.getThreads();
            let p = Promise.resolve();
            for (let x in threads) {
                p = p.then(() => processMessages(threads[x], email, label));
            }
            return p;
        }
    };
    let p = Promise.resolve();
    for (let i in data) {
        p = p.then(() => processRow(data[i]));
    }
    p.then(() => {
        console.log('done');
    });
}