Outdated lists can be problematic for several reasons:
Increased Bounce Rates: Sending emails to invalid addresses will result in higher bounce rates, which can harm your sender reputation. Lower Engagement: Inactive or uninterested recipients are less likely to open or engage with your emails, reducing overall engagement metrics. Potential Spam Complaints: Sending emails to people who don’t remember subscribing can lead to an increase in spam complaints. Compliance Issues: Outdated lists may not comply with regulations like GDPR or CAN-SPAM, leading to potential legal issues.