1. Slow Loading Times: One of the primary risks is slow loading times. Large, unoptimized images can significantly slow down the email's loading speed, especially on mobile devices where internet connections might be slower. This can cause recipients to lose interest and abandon your email.
2. Higher Bounce Rates: Slow loading images can increase the bounce rate of your emails. If recipients cannot see the content quickly, they are more likely to delete the email or mark it as spam, which negatively impacts your sender reputation.
3. Poor User Experience: Unoptimized images can result in a poor user experience. Images that are too large or not properly formatted may not display correctly, leading to a disjointed and unprofessional appearance. This can affect your brand's perception and credibility.