Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

Excel Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Excel) Bounced Email Handling

Demonstrates how to examine emails and detect which are bounced (automated) replies. Classifies each email according to the type of bounce.

Download Excel Class Modules

Chilkat Excel Class Modules

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

Dim bounce As Chilkat.Bounce
Set bounce = Chilkat.NewBounce

' The mailman object is used for receiving (POP3) 
' and sending (SMTP) email.
Dim mailman As Chilkat.MailMan
Set mailman = Chilkat.NewMailMan

' Set the POP3 server's hostname
mailman.MailHost = "mail.chilkatsoft.com"

' Set the POP3 login/password.
mailman.PopUsername = "myLogin"
mailman.PopPassword = "myPassword"

' Copy the all email from the user's POP3 mailbox 
' into a bundle object.  The email remains on the server.
' (There are other methods for deleting email from a POP3 server.)

Set bundle = mailman.CopyMail()
If (mailman.LastMethodSuccess = False) Then
    Debug.Print mailman.LastErrorText
    Exit Sub
End If


i = 0

Do While i < bundle.MessageCount
    Set email = bundle.GetEmail(i)


    success = bounce.ExamineEmail(email)
    If (success = False) Then
        Debug.Print bounce.LastErrorText

        Exit Sub
    End If

    If (bounce.BounceType = 1) Then
        ' Hard bounce, log the email address
        Debug.Print "Hard Bounce: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 2) Then
        ' Soft bounce, log the email address
        Debug.Print "Soft Bounce: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 3) Then
        ' General bounce, no email address available.
        Debug.Print "General Bounce: No email address"
    End If

    If (bounce.BounceType = 4) Then
        ' General bounce, log the email address
        Debug.Print "General Bounce: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 5) Then
        ' Mail blocked, log the email address
        ' A bounce occured because the sender was blocked. 
        Debug.Print "Mail Blocked: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 6) Then
        ' Auto-reply, log the email address
        Debug.Print "Auto-Reply: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 7) Then
        ' Transient (recoverable) Failure, log the email address
        Debug.Print "Transient Failure: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 8) Then
        ' Subscribe request, log the email address
        Debug.Print "Subscribe Request: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 9) Then
        ' Unsubscribe Request, log the email address
        Debug.Print "Unsubscribe Request: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 10) Then
        ' Virus Notification, log the email address
        Debug.Print "Virus Notification: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 11) Then
        ' Suspected bounce.
        ' This should be rare.  It indicates that the Bounce
        ' component found strong evidence that this is a bounced
        ' email, but couldn't quite recognize everything it
        ' needed to be 100% sure.  Feel free to notify
        ' support@chilkatsoft.com regarding emails having this
        ' bounce type.
        Debug.Print "Suspected Bounce!"
    End If

    If (bounce.BounceType = 12) Then
        ' Challenge/Response - Auto-reply message sent by SPAM software 
        ' where only verified email addresses are accepted. 
        Debug.Print "Challenge: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 13) Then
        ' Address Change Notification Message.
        Debug.Print "Address Change: "; bounce.BounceAddress
    End If

    If (bounce.BounceType = 14) Then
        ' Success DSN indicating that the message was successfully relayed.
        Debug.Print "DSN Successful Relay: "
    End If

    i = i + 1
Loop

success = mailman.Pop3EndSession()

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.