gmail delayed autoresponder using google apps

I need a script that will run exclusively inside a google account using google apps [login to view URL] Specifically gmailapp and triggers to run the script automatically every x minutes. [login to view URL] What i need is. 1- gmail account receives an email and the sender email address is added automatically to the contact list 2- After x minutes answer the email with template 1, after 1 day (or any time in the set up) send an email again with template 2, etc 3- If the person responds the first answer from item 2, answer with template 3 after x min 4- If the person responds the email from item 3, answer with template 4 after x min 5- Every day of the week or the month, broadcast message to all contact list (gmails has a limit on the amount of messages it can send per day. if the list of contacts is larger thant that it will split the broadcast among a few days, like send x email on day 1, send x email 6- Every x days, export all email contacts and send the DB to an email address Here are some samples of codes that can help [login to view URL] [login to view URL]