PowerBuilder

Delete a POP3 Message via an Email Object

Demonstrates the Chilkat MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL stored in the X-UIDL header of an Email object. The email must contain an X-UIDL header, which it does after being fetched from the server. This example fetches a message and then deletes it.

Background: When Chilkat downloads a POP3 message it records the server UIDL in an X-UIDL header on the Email object. DeleteEmail uses that header to tell the server which message to remove — a natural "process then delete" flow: fetch a message, act on it, then delete it. As always in POP3, the deletion is only committed when the session ends (unless ImmediateDelete is set).

Chilkat PowerBuilder Downloads

Download Chilkat for PowerBuilder

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Mailman
oleobject loo_Email

li_Success = 0

//  Demonstrates the MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL
//  stored in the X-UIDL header of an Email object.  The email must contain an X-UIDL header
//  (as it does after being fetched from the server).

loo_Mailman = create oleobject
li_rc = loo_Mailman.ConnectToNewObject("Chilkat.MailMan")
if li_rc < 0 then
    destroy loo_Mailman
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  Configure the POP3 server connection.
loo_Mailman.MailHost = "pop.example.com"
loo_Mailman.MailPort = 995
loo_Mailman.PopSsl = 1
loo_Mailman.PopUsername = "user@example.com"
loo_Mailman.PopPassword = "myPassword"

//  Fetch a message (headers are enough; the X-UIDL header identifies it on the server).
loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")

li_Success = loo_Mailman.FetchOne(1,0,1,loo_Email)
if li_Success = 0 then
    Write-Debug loo_Mailman.LastErrorText
    destroy loo_Mailman
    destroy loo_Email
    return
end if

//  Delete that message using its X-UIDL header.
li_Success = loo_Mailman.DeleteEmail(loo_Email)
if li_Success = 0 then
    Write-Debug loo_Mailman.LastErrorText
    destroy loo_Mailman
    destroy loo_Email
    return
end if

//  Unless the ImmediateDelete property is set to 1, the message is only marked for
//  deletion.  End the POP3 session (which sends the QUIT command) to commit the deletion.
li_Success = loo_Mailman.Pop3EndSession()
if li_Success = 0 then
    Write-Debug loo_Mailman.LastErrorText
    destroy loo_Mailman
    destroy loo_Email
    return
end if

Write-Debug "Deleted the email from the POP3 server."

//  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
//  connects and authenticates -- using the property settings above -- whenever a server
//  operation requires it.  Calling the explicit connect/authenticate methods can still be
//  helpful to determine whether a failure occurs while connecting or while authenticating.


destroy loo_Mailman
destroy loo_Email