There are several indicators that your emails may lack value: - Low open rates: If few people are opening your emails, it could mean that they don't find your subject lines compelling. - High unsubscribe rates: If recipients are frequently opting out, they may not find your emails useful or relevant. - Poor click-through rates: If few people are clicking on the links within your emails, it may indicate that the content isn't engaging. - Negative feedback: If you receive complaints or negative feedback, it's a clear sign that your emails aren't meeting your audience's expectations.