PowerShell

Count the Attached Messages in an Email

Demonstrates the read-only Chilkat Email.NumAttachedMessages property, which is the number of embedded emails represented by message/rfc822 MIME parts. These are counted separately from ordinary attachments and related items, and their indexes are zero-based. This example builds an inner email, attaches it to an outer email as a nested message, and prints the count.

Background: When you "forward as attachment," many mail clients embed the original message as a complete nested email rather than quoting its text. In MIME this appears as a message/rfc822 part — an entire email (its own headers and body) tucked inside the carrier message. Chilkat distinguishes three kinds of enclosed content: ordinary attachments (NumAttachments), inline related items (NumRelatedItems), and these nested messages (NumAttachedMessages). Use GetAttachedEmail to pull an embedded message into its own Email object.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

#  Demonstrates the read-only Email.NumAttachedMessages property, which is the
#  number of embedded emails (message/rfc822 MIME parts) contained in the email.

#  Create an inner email that we'll attach as a complete nested message.
$innerEmail = New-Object Chilkat.Email
$innerEmail.Subject = "I am an attached message"
$innerEmail.Body = "This entire email is nested inside another email."
$innerEmail.From = "alice@example.com"
$innerEmail.AddTo("Bob","bob@example.com")

#  Create the outer email and attach the inner email directly as a
#  message/rfc822 part.  AttachEmail attaches a copy of the inner email.
$email = New-Object Chilkat.Email
$email.Subject = "Outer email with an attached message"
$email.Body = "See the attached email."
$success = $email.AttachEmail($innerEmail)

$("NumAttachedMessages = " + $email.NumAttachedMessages)