Here are some indicators that your email might be too long:
Low Open Rates: If your open rates are declining, it could be because recipients are deterred by the length of your emails. Reduced Click-Through Rates: A lengthy email might overwhelm readers, leading to fewer clicks on your call-to-action (CTA). High Unsubscribe Rates: An influx of unsubscribes could indicate that recipients find your emails too time-consuming to read.