Inactive subscribers can make your email list look bigger than it really is, but they don't bring results. When many people don't open your emails, it can hurt your sender reputation and cause your messages to end up in spam. Before deleting them, it's better to try re-engaging them. You could send a simple email asking if they still want to hear from you or offer something special to draw their attention again. Some might come back, while others may not respond at all. If they stay inactive after a few tries, it's usually fine to remove them. Do you think keeping inactive people just for numbers is worth it?