(CkPython) POP3 to SMTP Forwarder

Read a POP3 mailbox and forwards the email to another email address, keeping the recipients in the original email the same.

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

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

success = False

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

mailman = chilkat.CkMailMan()

# Set the POP3 server's hostname
mailman.put_MailHost("pop.example.com")

# Set the POP3 login/password.
mailman.put_PopUsername("MY_POP3_LOGIN")
mailman.put_PopPassword("MY_POP3_PASSWORD")

# Set the SMTP hostname for sending.
mailman.put_SmtpHost("smtp.example.com")
mailman.put_SmtpUsername("MY_SMTP_LOGIN")
mailman.put_SmtpPassword("MY_SMTP_PASSWORD")

fromAddr = "me@example.com"
toAddr = "recipient@somewhere.com"

# The the UIDLs for all email in the POP3 mailbox.
stUidls = chilkat.CkStringTable()
success = mailman.FetchUidls(stUidls)
if (success == False):
    print(mailman.lastErrorText())
    sys.exit()

# Just mark messages for delete, then delete at the end.
mailman.put_ImmediateDelete(False)

# Download the email from the server.  Call FetchMimeBd
# because we don't want to load the emails into email objects.
# (We'll delete the emails that are forwarded without error.)
bdMime = chilkat.CkBinData()

count = stUidls.get_Count()
i = 0
while i < count :
    uidl = stUidls.stringAt(i)
    print("UIDL: " + uidl)

    success = mailman.FetchMimeBd(uidl,bdMime)
    if (success == False):
        print(mailman.lastErrorText())
        sys.exit()

    success = mailman.SendMimeBd(fromAddr,toAddr,bdMime)
    if (success == False):
        print(mailman.lastErrorText())
        sys.exit()

    success = mailman.DeleteByUidl(uidl)
    if (success == False):
        print(mailman.lastErrorText())
        sys.exit()

    i = i + 1

# Delete messages marked for delete.
mailman.put_ImmediateDelete(True)
success = mailman.Pop3EndSession()
if (success == False):
    print(mailman.lastErrorText())
    sys.exit()

print("Success.")