(PureBasic) How to Copy IMAP Mail to another IMAP Server

Demonstrates how to copy the entire contents of an IMAP mailbox to another IMAP server.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkImap.pb"
IncludeFile "CkStringArray.pb"

Procedure ChilkatExample()

    ; This example requires the Chilkat API to have been previously unlocked.
    ; See Global Unlock Sample for sample code.

    imapSrc.i = CkImap::ckCreate()
    If imapSrc.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect to our source IMAP server.
    success.i = CkImap::ckConnect(imapSrc,"imap.someMailServer.com")
    If success <> 1
        Debug CkImap::ckLastErrorText(imapSrc)
        CkImap::ckDispose(imapSrc)
        ProcedureReturn
    EndIf

    ; Login to the source IMAP server
    success = CkImap::ckLogin(imapSrc,"admin@chilkatsoft.com","myPassword")
    If success <> 1
        Debug CkImap::ckLastErrorText(imapSrc)
        CkImap::ckDispose(imapSrc)
        ProcedureReturn
    EndIf

    imapDest.i = CkImap::ckCreate()
    If imapDest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect to our destination IMAP server.
    success = CkImap::ckConnect(imapDest,"mail.example-code.com")
    If success <> 1
        Debug CkImap::ckLastErrorText(imapDest)
        CkImap::ckDispose(imapSrc)
        CkImap::ckDispose(imapDest)
        ProcedureReturn
    EndIf

    ; Login to the destination IMAP server
    success = CkImap::ckLogin(imapDest,"myLogin","myPassword")
    If success <> 1
        Debug CkImap::ckLastErrorText(imapDest)
        CkImap::ckDispose(imapSrc)
        CkImap::ckDispose(imapDest)
        ProcedureReturn
    EndIf

    ; Select an IMAP mailbox on the source IMAP server
    success = CkImap::ckSelectMailbox(imapSrc,"Inbox")
    If success <> 1
        Debug CkImap::ckLastErrorText(imapSrc)
        CkImap::ckDispose(imapSrc)
        CkImap::ckDispose(imapDest)
        ProcedureReturn
    EndIf

    ; After selecting a mailbox, the NumMessages property will
    ; be updated to reflect the total number of emails in the mailbox:
    Debug Str(CkImap::ckNumMessages(imapSrc))

    ; The emails in the mailbox will always have sequence numbers
    ; ranging from 1 to NumMessages.

    ; This example will copy the first 10 messages.
    ; We'll leave it up to you to write code to copy
    ; the entire sequence range in reasonable size chunks.
    startSeqNum.i = 1
    msgCount.i = 10

    sa.i
    sa = CkImap::ckFetchSequenceAsMime(imapSrc,startSeqNum,msgCount)
    If CkImap::ckLastMethodSuccess(imapSrc) <> 1
        Debug CkImap::ckLastErrorText(imapSrc)
        CkImap::ckDispose(imapSrc)
        CkImap::ckDispose(imapDest)
        ProcedureReturn
    EndIf

    i.i
    For i = 0 To CkStringArray::ckCount(sa) - 1
        success = CkImap::ckAppendMime(imapDest,"Inbox",CkStringArray::ckGetString(sa,i))
        If success <> 1
            Debug CkImap::ckLastErrorText(imapDest)
            CkImap::ckDispose(imapSrc)
            CkImap::ckDispose(imapDest)
            ProcedureReturn
        EndIf

    Next
    CkStringArray::ckDispose(sa)

    ; Disconnect from the IMAP servers.
    success = CkImap::ckDisconnect(imapSrc)
    success = CkImap::ckDisconnect(imapDest)


    CkImap::ckDispose(imapSrc)
    CkImap::ckDispose(imapDest)


    ProcedureReturn
EndProcedure