(Chilkat2-Python) Read IMAP Email Headers

Call FetchHeaders to download only the email headers.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

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

imap = chilkat2.Imap()

# Connect to an IMAP server.
# Use TLS
imap.Ssl = True
imap.Port = 993
success = imap.Connect("imap.someMailServer.com")
if (success != True):
    print(imap.LastErrorText)
    sys.exit()

# Login
success = imap.Login("****","****")
if (success != True):
    print(imap.LastErrorText)
    sys.exit()

# Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
if (success != True):
    print(imap.LastErrorText)
    sys.exit()

# We can choose to fetch UIDs or sequence numbers.
fetchUids = True
# Get the message IDs of all the emails in the mailbox
# messageSet is a CkMessageSet
messageSet = imap.Search("ALL",fetchUids)
if (imap.LastMethodSuccess != True):
    print(imap.LastErrorText)
    sys.exit()

# When downloading headers, each email object contains
# (obviously) the headers, but the body will be missing.
# Also, attachments will not be included.  However, it is
# possible to get information about the attachments
# as well as the complete size of the email.

# bundle is a CkEmailBundle
bundle = imap.FetchHeaders(messageSet)
if (imap.LastMethodSuccess != True):

    print(imap.LastErrorText)
    sys.exit()

# Loop over the email objects and display information
# about each:

for i in range(0,bundle.MessageCount):

    # email is a CkEmail
    email = bundle.GetEmail(i)

    # Display the From and Subject
    print(email.From)
    print(email.Subject)

    # Display the recipients:

    for j in range(0,email.NumTo):
        name = email.GetToName(j)
        addr = email.GetToAddr(j)
        print(name + ", " + addr)

    for j in range(0,email.NumCC):
        name = email.GetCcName(j)
        addr = email.GetCcAddr(j)
        print(name + ", " + addr)

    # Show the total size of the email, including body and attachments:
    print(str(email.Size))

    # When a full email is downloaded, we would use the
    # email.NumAttachments property in conjunction with the
    # email.GetMailAttach* methods.
    # However, when an email object contains only the header,
    # we need to access the attachment info differently:
    numAttach = imap.GetMailNumAttach(email)
    for j in range(0,numAttach):
        print(imap.GetMailAttachFilename(email,j))
        attachSize = imap.GetMailAttachSize(email,j)
        print("    size = " + str(attachSize) + " bytes")

    print("--")

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