(Visual FoxPro) Determine the Number of Unseen Email Messages

Demonstrates how to determine how many unseen messages exist in an email account on an IMAP server.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loImap
LOCAL lnSuccess
LOCAL lnTotalNum
LOCAL lnFetchUids
LOCAL loMessageSet
LOCAL lnNumUnseen
LOCAL i
LOCAL lnMsgId

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

loImap = CreateObject('Chilkat_9_5_0.Imap')

* Connect to an IMAP server.
* Use TLS
loImap.Ssl = 1
loImap.Port = 993
lnSuccess = loImap.Connect("imap.someMailServer.com")
IF (lnSuccess <> 1) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

* Login
lnSuccess = loImap.Login("***","***")
IF (lnSuccess <> 1) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

* Select an IMAP mailbox
lnSuccess = loImap.SelectMailbox("Inbox")
IF (lnSuccess <> 1) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

* After selecting the mailbox. the total number of emails
* is immediately available:
lnTotalNum = loImap.NumMessages
? "Num messages = " + STR(lnTotalNum)

* To determine the number of unseen messages, a call
* to Search is required, which returns the set of UIDs
* of all unseen messages.

* We can choose to fetch UIDs or sequence numbers.
lnFetchUids = 1

loMessageSet = loImap.Search("UNSEEN",lnFetchUids)
IF (loImap.LastMethodSuccess = 0) THEN
    ? loImap.LastErrorText
    RELEASE loImap
    CANCEL
ENDIF

lnNumUnseen = loMessageSet.Count
? STR(lnNumUnseen)

? "UIDs ----"

* Display the UIDs
i = 0

DO WHILE i < loMessageSet.Count
    lnMsgId = loMessageSet.GetId(i)
    ? STR(lnMsgId)
    i = i + 1
ENDDO

* Disconnect from the IMAP server.
lnSuccess = loImap.Disconnect()

RELEASE loMessageSet

RELEASE loImap