(Chilkat2-Python) Rename Email Attachments After Adding

Demonstrates how to rename email attachments after adding but before sending.

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.

mailman = chilkat2.MailMan()

mailman.SmtpHost = "smtp.my-mail-server.com"
mailman.SmtpUsername = "MY_SMTP_USERNAME"
mailman.SmtpPassword = "MY_SMTP_PASSWORD"
mailman.SmtpSsl = True
mailman.SmtpPort = 465

email = chilkat2.Email()

email.Subject = "This is a test"
email.Body = "This is a test"
email.From = "Chilkat Support <support@chilkatsoft.com>"
success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com")
# To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

# Add some attachments.
# The AddFileAttachment method returns the value of the content-type it chose for the attachment.
contentType = email.AddFileAttachment("qa_data/jpg/starfish.jpg")
if (email.LastMethodSuccess != True):
    print(email.LastErrorText)
    sys.exit()

contentType = email.AddFileAttachment("qa_data/pdf/fishing.pdf")
if (email.LastMethodSuccess != True):
    print(email.LastErrorText)
    sys.exit()

# If we save the email to a .eml, we can examine in a text editor.
success = email.SaveEml("qa_output/e1.eml")
if (success == False):
    print(email.LastErrorText)
    print("Failed to save .eml")
    sys.exit()

# We see the following in the e1.eml
# Notice that Chilkat replaced the full path with just the filename.
# The full local path is not part of the email that gets sent..

# ...
# --------------020807050607070004010609
# Content-Type: image/jpeg; name="starfish.jpg"
# Content-Transfer-Encoding: base64
# Content-Disposition: attachment; filename="starfish.jpg"
# 
# ...
# --------------020807050607070004010609
# Content-Type: application/pdf; name="fishing.pdf"
# Content-Transfer-Encoding: base64
# Content-Disposition: attachment; filename="fishing.pdf"
# ...

# Before sending, each filename can be changed within the email object.
# For example:
success = email.SetAttachmentFilename(0,"orange_starfish.jpg")
success = email.SetAttachmentFilename(1,"tuna_fishing.pdf")

# Look at the new MIME source of the email in a  text editor...
success = email.SaveEml("qa_output/e2.eml")
if (success == False):
    print(email.LastErrorText)
    print("Failed to save .eml")
    sys.exit()

# You'll see this:

# ...
# --------------020807050607070004010609
# Content-Type: image/jpeg; name="orange_starfish.jpg"
# Content-Transfer-Encoding: base64
# Content-Disposition: attachment; filename="orange_starfish.jpg"
# 
# ...
# --------------020807050607070004010609
# Content-Type: application/pdf; name="tuna_fishing.pdf"
# Content-Transfer-Encoding: base64
# Content-Disposition: attachment; filename="tuna_fishing.pdf"
# ...

# Send the email with the updated filenames..
success = mailman.SendEmail(email)
if (success != True):
    print(mailman.LastErrorText)
    sys.exit()

success = mailman.CloseSmtpConnection()
if (success != True):
    print("Connection to SMTP server not closed cleanly.")

print("Mail with attachments sent!")