VB6 ExampleIn an ASP/ASP.NET email application, if email download takes longer than the timeout value (in seconds) that the current asp page is allowed to run, user will get an error "ASP Timeout". This often happens when user has a large quantity of emails to download or user downloads emails via a slow connection. By default the timeout is set to 90 seconds, it is easy to exceed this limit.
Obviously, a solution to ASP timeout is to set ASPScriptTimeout a larger value. You may click here for details. Technically the timeout problem can be solved in this way; however, some users may get frustrated and press the stop button on the browser toolbar as he waits too long.
EAGetMail POP3 Component introduces a more intelligent method to retrieve emails in background. You should download the EAGetMail Service installer and install it on your machine at first. Then you can use MailClient.GetMailsByQueue method to send the request to EAGetMail Service, the method returns to the user immediately and the EAGetMail Service performs task in background.
To run the following example, you also need to download EAGetMail Service and install it on your machine.
The following example codes demonstrate how to download email from POP3 server in background.
' The following example codes demonstrate downloading email from POP3 server in background
' 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 = "pop3.emailarchitect.net"
oServer.User = "test@emailarchitect.net"
oServer.Password = "testpassword"
oServer.Protocol = MailServerPop3
' If your POP3 requires SSL connection
' Please add the following codes
' oServer.SSLConnection = True
' oServer.Port = 995
On Error GoTo ErrorHandle:
Dim oClient As New EAGetMailObjLib.MailClient
oClient.LicenseCode = "TryIt"
' Leave a copy of message on server.
Dim leaveCopy As Boolean
leaveCopy = True
' Download emails to this local folder
Dim downloadFolder As String
downloadFolder = mailbox
' Send request to EAGetMail Service, then EAGetMail Service retrieves email
' in background and this method returns immediately.
oClient.GetMailsByQueue oServer, downloadFolder, leaveCopy
Exit Sub
ErrorHandle:
MsgBox Err.Description
End Sub
If you have any comments or questions about above example codes, please add your comments here.
