AutoIt

Attach a File with an Explicit Content Type

Demonstrates the Chilkat Email.AddFileAttachment2 method, which attaches a file from the filesystem and lets you explicitly specify its content type rather than having Chilkat infer it from the file extension. This example attaches a binary file as application/octet-stream.

Background: Extension-based type detection is convenient but not always right — a file may have an unusual or missing extension, or you may need a very specific MIME type for the recipient to process it correctly. Specifying the content type explicitly removes the guesswork. application/octet-stream is the generic "arbitrary binary data" type, a safe default that tells the client to treat the attachment as an opaque download rather than trying to render it.

Chilkat AutoIt Downloads

Download Chilkat for AutoIt

AutoIt

Local $bSuccess = False

;  Demonstrates the AddFileAttachment2 method, which attaches a file and lets you
;  explicitly specify its content type instead of letting Chilkat infer it.

$oEmail = ObjCreate("Chilkat.Email")
$oEmail.Subject = "Email with a file attachment"
$oEmail.Body = "Please see the attached file."

;  Attach a file, explicitly specifying the content type.
$bSuccess = $oEmail.AddFileAttachment2("qa_data/attachments/data.bin","application/octet-stream")
If ($bSuccess = False) Then
    ConsoleWrite($oEmail.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("NumAttachments = " & $oEmail.NumAttachments & @CRLF)

;  Note: The path "qa_data/attachments/data.bin" is a relative local filesystem path,
;  relative to the current working directory of the running application.