SIMPLE MAIL TRANSFER PROTOCOL |
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SMTPThe SMTP Client provides an API to send mail messages to an SMTP Server. Mail messages consist of a from field, a subject, a list of recipients, and an optional message body and optional attachment. The API consists
of a single subroutine that returns success or failure. If the
routine fails, an errno facility indicates why. POP3The POP Client provides API's to check if there are any mail messages queued on the server and to retrieve the subject, sender and content of the messages. When the content of a mail message is returned, it is conveniently passed into sections by MIME type. An API is also provided to delete mail messages from the server. Optional TCP-IP Protocol
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