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The reason for multiple similar activities like Get Mail, Get Email By ID, Get Email List, and Get Newest Email is to provide flexibility and optimization based on specific use cases. While Get Mail with the “Include Subfolders” property could handle many scenarios, the other activities are specialized to provide more precise control over specific requirements (e.g., fetching emails by ID, retrieving a list of emails, or fetching the newest email). These variations help improve performance and simplify workflows for different needs. However, combining features could be beneficial, and it’s something to consider for future improvements.