POP SMTP
IMAP Email Client
Mailbox Port
Mail Server

 

A standard protocol for sending emails across the Internet. A protocol used by email clients to retrieve emails from a remote server.
Software or application used to access and manage email accounts. A protocol that allows users to access and manage their email on a remote server.
A communication endpoint that helps in differentiating various types of traffic on a server. A repository for storing incoming emails until retrieved by a user.
A server responsible for receiving, storing, and sending emails.