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(Xojo Plugin) Send Encrypted Email to Multiple Recipients

Demonstrates how to create and send an S/MIME encrypted email to multiple recipients. The digital certificate of each recipient is required. The encrypting/sending process uses each recipient's digital certificate (which internally contains the public key). Each recipient decrypts the received email using his/her private key.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

// The mailman object is used for sending and receiving email.
Dim mailman As New Chilkat.MailMan

// Set the SMTP server.
mailman.SmtpHost = "smtp.mymailserver.com"

// Load each recipient's certificate into a Chilkat certificate object.
// This example loads the certificates from files.  However, the Chilkat
// certificate object provides other means for loading certificates,
// such as from in-memory PEM strings, or in-memory binary DER encoded form, etc.
Dim cert1 As New Chilkat.Cert
Dim success As Boolean
success = cert1.LoadFromFile("recipient1.cer")
If (success <> True) Then
    System.DebugLog(cert1.LastErrorText)
    Return
End If

Dim cert2 As New Chilkat.Cert
success = cert2.LoadFromFile("recipient2.cer")
If (success <> True) Then
    System.DebugLog(cert2.LastErrorText)
    Return
End If

Dim cert3 As New Chilkat.Cert
success = cert3.LoadFromFile("recipient3.cer")
If (success <> True) Then
    System.DebugLog(cert3.LastErrorText)
    Return
End If

// Create a new email object
Dim email As New Chilkat.Email

email.Subject = "This email is encrypted and sent to 3 recipients"
email.Body = "This is an S/MIME encrypted mail sent to 3 recipients"
email.From = "Chilkat Support <support@chilkatsoft.com>"

// Make each of the certificates available for encrypting the email
// by calling AddEncryptCert for each.
success = email.AddEncryptCert(cert1)
If (success = True) Then
    success = email.AddEncryptCert(cert2)
End If

If (success = True) Then
    success = email.AddEncryptCert(cert3)
End If

If (success <> True) Then
    System.DebugLog(email.LastErrorText)
    Return
End If

// Add 3 recipients to the email (2 TO addresses, and 1 CC address)
success = email.AddTo("Recipient 1","admin@cknotes.com")
success = email.AddTo("Recipient 2","somebody001122@yahoo.com")
success = email.AddCC("Recipient 3","somebody123xyz@gmail.com")

// Indicate that the email is to be sent encrypted.
email.SendEncrypted = True

// Send the encrypted email...
success = mailman.SendEmail(email)
If (success <> True) Then
    System.DebugLog(mailman.LastErrorText)
Else
    System.DebugLog("Encrypted Email Sent!")
End If


 

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