(Chilkat2-Python) Imap.GetMailSize vs Email.Size

Shows how to get the total size of an email, as well as the sizes of the attachments. This can be done when either full-emails or headers-only are downloaded.

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 assumes 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 == False):
    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 == False):

    print(imap.LastErrorText)
    sys.exit()

# Loop over the email objects and display information
# about each:
i = 0
numEmails = bundle.MessageCount
while i < numEmails :

    # 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):
        print(email.GetToName(j) + ", " + email.GetToAddr(j))

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

    # 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("--")

    i = i + 1

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