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Winsock: reading email messages (POP3, port 110)

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Before you begin:
This code returns number of incoming email messages waiting on a POP3 server without opening your default email client (Outlook Express, GoupWise, Eudora etc.).

Also it contains basic GetMsg and GetMsgTop methods being good enough for reading those messages.

Note that even after being read all messages stay on your server (unless you decide to issue the DELE command), so they will be available for retrieving in your regular email program.

In the beginning part of the code replace connection attributes with valid ones from your email account. This is where you can find them in Microsoft Outlook Express:



See also:
  • Winsock: sending email messages (SMTP, port 25)
  • MAPI example (file attachments enabled)
  • MAPI: sending email messages
  • MAPI: reading email messages
  • Function MAPISendDocuments

    FoxTalk articles:
  • Sending SMTP Messages in Visual FoxPro Applications, Part 1
  • Sending SMTP Messages in Visual FoxPro Applications, Part 2
  • Accessing Hotmail and MSN Accounts in Visual FoxPro
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    6623 bytes  
    Created: 2003-02-21 11:32:53  
    Modified: 2011-12-10 09:20:22  
    Visits in 7 days: 146  
    Listed functions:
    closesocket
    gethostbyname
    htons
    inet_addr
    inet_ntoa
    recv
    send
    socket
    WSACleanup
    WSACloseEvent
    WSACreateEvent
    WSAEventSelect
    WSAStartup
    WSAWaitForMultipleEvents
    Printer friendly API declarations
    My comment:
    A screen output will be similar to the following:

    Connecting to pop3.fastmail.com, 192.168.0.1 ...
    +OK POP3 server ready.

    >> USER UncleJoe
    +OK Password required.

    >> PASS checkmail
    +OK logged in.

    >> STAT 5 67312

    >> QUIT
    +OK POP3 server signing off.


    "STAT 5" means that there is 5 messages waiting.

    * * *
    There is a couple of links that might be interesting:
  • STD/STD53. Post Office Protocol - Version 3
  • How to receive an e-mail (Introduction to POP3 protocol)

    #kwd: sln_reademail, sln_winsock
  • Word Index links for this example:
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