PowerShell

Download the Full Version of a Partial Email

Demonstrates the Chilkat MailMan.FetchFull method, which downloads the complete version of a header-only or partial Email and stores it in a second Email. The full result includes the complete body and any attachments, and the partial email must retain its UIDL. This example previews message 1 (headers only) and then downloads it in full.

Background: A common pattern is to download headers first — cheap and fast — show the user a message list, and only pull the full content when a message is actually opened. FetchFull completes that "download on demand" flow: given a partial email (which carries its UIDL), it fetches the rest from the server. This keeps bandwidth and latency low when browsing a large mailbox.

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PowerShell

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

$success = $false

#  Demonstrates the MailMan.FetchFull method, which downloads the complete version of a
#  header-only or partial Email and stores it in a second Email.  The full result includes
#  the complete body and any attachments.  The partial email must retain its UIDL.

$mailman = New-Object Chilkat.MailMan

#  Configure the POP3 server connection.
$mailman.MailHost = "pop.example.com"
$mailman.MailPort = 995
$mailman.PopSsl = $true
$mailman.PopUsername = "user@example.com"
$mailman.PopPassword = "myPassword"

#  First fetch message 1 as headers only (a fast preview).  headerOnly=$true.
$partialEmail = New-Object Chilkat.Email

$success = $mailman.FetchOne($true,0,1,$partialEmail)
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Preview subject: " + $partialEmail.Subject)

#  Now download the complete message (body and attachments).
$fullEmail = New-Object Chilkat.Email
$success = $mailman.FetchFull($partialEmail,$fullEmail)
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Full email NumAttachments: " + $fullEmail.NumAttachments)

#  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
#  connects and authenticates -- using the property settings above -- whenever a server
#  operation requires it.  Calling the explicit connect/authenticate methods can still be
#  helpful to determine whether a failure occurs while connecting or while authenticating.