Image Size: Large images can significantly slow down the loading time. Compressing images can help.
Embedded Videos: While engaging, videos can also make emails load slower. Using thumbnails linked to external videos is a better option.
Code Complexity: Overly complex HTML and CSS can delay rendering. Simplify your code for better performance.
External Links: Emails that fetch data from external servers can be slow. Limit the use of external resources.
Optimize Images: Use tools to compress images without losing quality.
Minimize Embedded Content: Avoid embedding videos and other heavy content directly in the email.
Simplify Code: Remove unnecessary HTML and CSS to streamline the email structure.
Preheader Text: Use preheader text wisely to give a quick preview and encourage engagement even before the email fully loads.
Litmus: A popular tool for testing email load times across different email clients.
Email on Acid: Offers comprehensive testing options to ensure your emails load quickly.
Google PageSpeed Insights: Though primarily for web pages, it can be useful for analyzing embedded content.
What is the Impact of Slow Loading Emails on KPIs?
Slow loading emails can negatively impact key performance indicators (KPIs) such as
open rates, click-through rates (CTR), and conversion rates. Users are less likely to engage with emails that take too long to load, leading to reduced effectiveness of your email marketing campaigns.