Manage inactive recipients
Use the corresponding feature in your list preferences. You can choose whether to:
- reduce the number of messages sent to inactive recipients
- suspend them after trying to contact them
- unsubscribe them
Everything happens automatically. Remember that these are inactive recipients: the impact on your opens and clicks will be minimal, but the advantages in terms of reputation could be significant because - by definition - your level of engagement will go up (e.g. opens with less recipients = higher open rate).