Automate Gmail with Google Apps Script to archive emails from custom label.

Automate Gmail with Google Apps Script to archive emails from custom label

function archieveReadMail() {
    const labels = ['Support', 'Notifications'];
    for (const label of labels) {
        const getUserLabelByName = GmailApp.getUserLabelByName(label);
        const threads = getUserLabelByName.getThreads();
        const hasThreads = Array.isArray(threads) && threads.length > 0;
        if (hasThreads) {
            threads.forEach(thread => {
                if (!thread.isUnread()) {
                    GmailApp.moveThreadToArchive(thread)
                    getUserLabelByName.removeFromThread(thread);
                }
            })
        }
    }
}
// Based on https://medium.com/@bikramkawan/86526aae2429