CkPython

Get the Total Size of an IMAP Message

Demonstrates the Chilkat Imap.GetMailSize method, which returns the complete server-reported size of a message in bytes, including attachment data. The only argument is the Email. This example fetches only the headers and prints the full message size.

Background: The server reports each message's total size, so this value is available even when only the headers were downloaded. That lets a client show a size column in a message list, sort by size, or warn the user before downloading an unusually large message — all without fetching the full body first.

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import sys
import chilkat

success = False

#  Demonstrates the Imap.GetMailSize method, which returns the complete server-reported size
#  of a message in bytes, including attachments.  The only argument is the Email.

imap = chilkat.CkImap()

imap.put_Ssl(True)
imap.put_Port(993)

success = imap.Connect("imap.example.com")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

success = imap.Login("user@example.com","myPassword")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

success = imap.SelectMailbox("Inbox")
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

#  Fetch only the message headers.  Attachment bodies are NOT downloaded, but the ckx-imap-*
#  metadata describing the attachments is present, so the attachment info methods still work.
headersOnly = True
useUid = False
seqNum = 1
email = chilkat.CkEmail()
success = imap.FetchEmail(headersOnly,seqNum,useUid,email)
if (success == False):
    print(imap.lastErrorText())
    sys.exit()

sizeBytes = imap.GetMailSize(email)
print("Total message size: " + str(sizeBytes) + " bytes")

success = imap.Disconnect()
if (success == False):
    print(imap.lastErrorText())
    sys.exit()