1. Analytics Platforms: Tools like Google Analytics or email marketing platforms such as Mailchimp can provide detailed insights and reports. 2. Heatmaps: Tools like Hotjar can show where recipients are clicking within your emails, helping you understand user behavior. 3. Customer Feedback Tools: Use platforms like SurveyMonkey or Typeform to create and distribute surveys easily. 4. Task Management Tools: Applications like Trello or Asana can help you track feedback implementation and follow-up tasks.