Need to stop auto renewal mail notifications

Summary:

Dears,
We are implementing the auto renewal feature, so let`s say there are 5 mail notifications that are sent to the customer before renewal to remind him about the subscription expiry.

Let`s assume that customer replied that he is going to renew his subscription, so there`s no need to have the rest of mail notifications that are scheduled to be sent to him, so I have some questions:

• How should I stop the auto mail notifications?
• How should I flag the subscription as customer replied with acceptance?
• Where can I find the email body? as I can find the subject config only.