Several tools can assist in pinpointing bottlenecks:
Google Analytics: Track user behavior post-click to identify where drop-offs occur. Email Service Providers (ESPs): Most ESPs offer detailed analytics on open rates, CTR, and more. A/B Testing Tools: Use these to test different subject lines, CTAs, and layouts to see what works best. Heatmaps: Tools like Hotjar can show you where users are clicking (or not clicking) in your emails.