While cognitive overload is somewhat subjective, you can use certain metrics to gauge whether your emails are overwhelming your audience:
Engagement Metrics: Low open rates, click-through rates, and high bounce rates can indicate that your emails are not resonating with your audience. li> Heatmaps: Tools like heatmaps can show you where your readers are clicking and where they are losing interest. Feedback: Collect feedback from your subscribers through surveys or direct comments to understand their experience better.