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fearphage/expire-emails.js

Created October 2, 2018 20:34
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  1. fearphage created this gist Oct 2, 2018.
    64 changes: 64 additions & 0 deletions expire-emails.js
    View file
    Original file line number Diff line number Diff line change
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    // The name of the Gmail Label to expire
    var GMAIL_LABEL = 'expires';

    // Archive messages automatically after N days
    var EXPIRE_AFTER = '10';

    /*
    * STOP EDITING BELOW HERE UNLESS
    * YOU KNOW WHAT YOU'RE DOING
    *
    */

    function Install() {
    ScriptApp.newTrigger('purge')
    .timeBased()
    .after(1000 * 60 * 5)
    .create()
    ;

    ScriptApp.newTrigger('purge')
    .timeBased()
    .everyDays(1)
    .create()
    ;
    }

    function Uninstall() {
    var
    triggers = ScriptApp.getProjectTriggers()
    ,i = 0
    ,trigger
    ;

    while (trigger = triggers[i++]) {
    ScriptApp.deleteTrigger(trigger);
    }
    }

    function purge() {
    var
    expiry = new Date
    ,i = 0
    ,threads
    ,thread
    ;

    expiry.setDate(expiry.getDate() - EXPIRE_AFTER);

    threads = GmailApp.search('in:inbox label:' + GMAIL_LABEL + ' before:' + Utilities.formatDate(expiry, Session.getScriptTimeZone(), 'yyyy-MM-dd'), 0, 100);

    if (threads.length == 100) {
    ScriptApp.newTrigger('purge')
    .timeBased()
    .after(1000 * 60 * 5)
    .create()
    ;
    }

    while (thread = threads[i++]) {
    if (thread.getLastMessageDate() < expiry) {
    thread.moveToArchive();
    }
    }
    }