John is a system administrator who wants to set up an email system for his company. He wants the employees to access their emails from multiple devices and ensure that actions like deleting or reading an email on one device are reflected on others. Which protocol should John implement?

John should implement the IMAP (Internet Message Access Protocol). IMAP allows users to access their emails from multiple devices, and actions like deleting or reading an email on one device are synchronized across all devices. It's suitable for scenarios where users need access to their emails from various locations and devices.