bcc, BCC: Blind Carbon Copy (BCC) is similar to CC but keeps the recipients' email addresses private. When you BCC someone, other recipients can’t see that person’s email address or know they received the email. This is commonly used to protect privacy or to send emails to multiple people without sharing their contact information with others. cc, CC: Carbon Copy (CC) is a field in email that allows you to send a copy of the message to additional recipients besides the main addressee. People in the CC field can view the email and know who else received it. It’s often used to keep others informed without expecting a direct response. imap, IMAP: IMAP (Internet Message Access Protocol) is a standard protocol for retrieving emails from a server, allowing users to manage and view messages without downloading them permanently. IMAP keeps emails on the server, supporting multiple device synchronization. mapi, MAPI: Messaging Application Programming Interface (MAPI) is a Microsoft interface that allows applications (like Microsoft Outlook) to communicate with email servers (such as Microsoft Exchange). MAPI enables features such as sending, receiving, and managing emails, as well as accessing calendar, contact, and task data, making it central to email and collaboration tools in many business environments. pop3, POP3: POP3 (Post Office Protocol Version 3) is an email protocol used to retrieve messages from a server. Unlike IMAP, POP3 typically downloads emails for offline access and may delete them from the server after retrieval. smtp, SMTP: SMTP (Simple Mail Transfer Protocol) is a standard protocol used to send and route email messages between mail servers. SMTP does not encrypt emails by default, but secure versions like SMTPS (SMTP Secure) or using TLS on port 587 offer encryption.