Discuss Java mail architecture with suitable diagram and explain its components.

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 As said above the java application uses JavaMail API to compose, send and receive emails. The following figure illustrates the architecture of JavaMail:



The abstract mechanism of JavaMail API is similar to other APIs, such as JDBC, JNDI etc. As seen the architecture diagram above, JavaMail API is divided into two main parts:

• An application-independent part.:- An application-programming interface (API) is used by the application components to send and receive mail messages, independent of the underlying provider or protocol used.

• A service-dependent part:- A service provider interface (SPI) speaks the protocol-specific languages, such as SMTP, POP, IMAP, and Network News Transfer Protocol (NNTP). It is used to plug in a provider of an e-mail service to the java platform.

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