IMAP/SMTP
IMAP (Internet Message Access Protocol) and SMTP (Simple Mail Transfer Protocol) are core email protocols used for retrieving and sending emails, respectively. IMAP allows email clients to access and manage messages stored on a mail server, enabling synchronization across multiple devices, while SMTP handles the transmission of outgoing emails between servers and clients.
Developers should learn IMAP/SMTP when building email-related applications, such as email clients, automated notification systems, or email marketing tools, as they provide standardized methods for email communication. It's essential for integrating email functionality into software, ensuring reliable sending and receiving of messages across different platforms and services.