(CkPython) Fetch 1st N Headers of Search Results

Calls Search to get a message set, then downloads the 1st N messages in the message set. There are two equivalent ways of doing it: (1) iterate from 0 to N-1 and download each message individually, or (2) create a new message set that contains the 1st N messages and pass it to FetchHeaders. Both are demonstrated here.

Note: This example requires Chilkat v11.0.0 or greater.

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import sys
import chilkat

success = False

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

imap = chilkat.CkImap()

# Connect to an IMAP server.
# Use TLS
imap.put_Ssl(True)
imap.put_Port(993)
success = imap.Connect("imap.example.com")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

# Login
success = imap.Login("****","****")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

# Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

# Get the message IDs of all the emails in the mailbox
# We can choose to fetch UIDs or sequence numbers.
fetchUids = True
messageSet = chilkat.CkMessageSet()
success = imap.QueryMbx("ALL",fetchUids,messageSet)
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

numFound = messageSet.get_Count()
if (numFound == 0):
    print("No messages found.")
    sys.exit()

# Get the 1st 10 messages in messageSet.
upperBound = 10
if (numFound < upperBound):
    upperBound = numFound

i = 0
bUid = messageSet.get_HasUids()
headerOnly = True
email = chilkat.CkEmail()

while i < upperBound :

    success = imap.FetchEmail(headerOnly,messageSet.GetId(i),bUid,email)
    if (success == False):
        print(imap.lastErrorText())
        sys.exit()

    print(str(i) + ": " + email.subject())

    i = i + 1

# Disconnect from the IMAP server.
success = imap.Disconnect()