Using a .cer Certificate File for Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer file.

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

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

'  Any string argument automatically begins the 30-day trial.
Dim success As Boolean
success = mailman.UnlockComponent("30-day trial")
If (success <> true) Then
    MsgBox("Component unlock failed")
    Exit Sub
End If


'  Set the SMTP server.
mailman.SmtpHost = "smtp.comcast.net"

'  Load the .cer file into a certificate object:
Dim cert As New Chilkat.Cert()
success = cert.LoadFromFile("comodoChilkat.cer")
If (success <> true) Then
    MsgBox(cert.LastErrorText)
    Exit Sub
End If


'  Create a new email object
Dim email As New Chilkat.Email()

email.Subject = "This email is encrypted"
email.Body = "This is a digitally encrypted mail"
email.From = "Chilkat Support <support@chilkatsoft.com>"
email.AddTo("Comodo Test","comodo@chilkatsoft.com")

'  Indicate that the email is to be sent encrypted.
email.SendEncrypted = true

'  Specify the certificate:
email.SetEncryptCert(cert)

success = mailman.SendEmail(email)
If (success <> true) Then
    MsgBox(mailman.LastErrorText)
Else
    MsgBox("Mail Sent!")
End If