B4X

Rename Email Attachments After Adding

Demonstrates how to rename email attachments after adding but before sending. B4X

Dim success As Boolean = False

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

Dim mailman As ChilkatMailMan
mailman.Initialize("mailman")

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

Dim email As ChilkatEmail
email.Initialize

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.
Dim contentType As String = email.AddFileAttachment("qa_data/jpg/starfish.jpg")
If email.LastMethodSuccess <> True Then
    Log(email.LastErrorText)
    Return
End If

contentType = email.AddFileAttachment("qa_data/pdf/fishing.pdf")
If email.LastMethodSuccess <> True Then
    Log(email.LastErrorText)
    Return
End If


'  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 Then
    Log(email.LastErrorText)
    Log("Failed to save .eml")
    Return
End If


'  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 Then
    Log(email.LastErrorText)
    Log("Failed to save .eml")
    Return
End If


'  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 Then
    Log(mailman.LastErrorText)
    Return
End If


success = mailman.CloseSmtpConnection
If success <> True Then
    Log("Connection to SMTP server not closed cleanly.")
End If


Log("Mail with attachments sent!")