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#1 Posted : Monday, May 2, 2011 5:03:54 PM(UTC)

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VB6 Example

SSL connection encrypts data between the email component and POP3 server or IMAP4 server to protect user, password and email content in TCP/IP level. Now this technology is commonly used and many email servers are deployed with SSL such as Gmail, Yahoo and Hotmail. There are two ways to deploy SSL on email server: 1. Using STARTTLS or STLS command to switch SSL channel on normal port (POP3: 110 or IMAP4: 143); 2. Deploying SSL on another port (POP3: 995 or IMAP4: 993 you may query it from your server administrator) directly.

The following example codes demonstrate how to retrieve email over SSL connection from IMAP4 server. This sample downloads emails from IMAP4 server and deletes the email after the email is retrieved.


' The following example codes demonstrate retrieving email over SSL connection from IMAP4 server
' To get full sample projects, please download and install EAGetMail on your machine.
' To run it correctly, please change email server, user, password, folder, file name value to yours

Option Explicit 

Const MailServerPop3 = 0 
Const MailServerImap4 = 1 

Private Sub Command1_Click() 
    Dim curpath As String 
    Dim mailbox As String 
    Dim oTools As New EAGetMailObjLib.Tools 

    ' Create a folder named "inbox" under current directory
    ' to save the email retrieved.
    curpath = App.Path 
    mailbox = curpath & "\inbox" 
    oTools.CreateFolder mailbox 

    Dim oServer As New EAGetMailObjLib.MailServer 
    oServer.Server = "imap.emailarchitect.net" 
    oServer.User = "test@emailarchitect.net" 
    oServer.Password = "testpassword" 
    oServer.Protocol = MailServerImap4 

    ' Enable SSL connection
    oServer.SSLConnection = True 

    ' Set 993 SSL IMAP4 port
    oServer.Port = 993 

    On Error GoTo ErrorHandle: 
    Dim oClient As New EAGetMailObjLib.MailClient 
    oClient.LicenseCode = "TryIt" 

    oClient.Connect oServer 
    MsgBox "Connected" 

    Dim infos 
    infos = oClient.GetMailInfos() 
    MsgBox UBound(infos) + 1 & " emails" 

    Dim i As Integer 
    For i = LBound(infos) To UBound(infos) 
        Dim info As EAGetMailObjLib.MailInfo 
        Set info = infos(i) 
        MsgBox "Index: " & info.Index & "; Size: " & info.Size & _ 
        "; UIDL: " & info.UIDL 

        ' Receive email from IMAP4 server
        Dim oMail As EAGetMailObjLib.Mail 
        Set oMail = oClient.GetMail(info) 

        MsgBox "From: " & oMail.From.Address & _ 
            vbCrLf & "Subject: " & oMail.Subject 

        Dim fileName As String 
        ' Generate a random file name by current local datetime,
        ' You can use your method to generate the filename if you do not like it
        fileName = mailbox & "\" & oTools.GenFileName(i) & ".eml 

        ' Save email to local disk
        oMail.SaveAs fileName, True 

        ' Mark email as deleted from IMAP4 server.
        oClient.Delete info 

    ' Quit and pure emails marked as deleted from IMAP4 server.
    Exit Sub 

    MsgBox Err.Description 
End Sub 

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