Send an Email via SMTP

See more SMTP Examples

Demonstrates the Chilkat MailMan.SendEmail method, which sends a single Email object through the configured SMTP server. This example configures the SMTP connection, builds a message, and sends it.

Background: SMTP (Simple Mail Transfer Protocol) is the protocol for sending mail. The typical flow is: connect to the server, authenticate, then hand over the message with MAIL FROM, RCPT TO, and DATA. SendEmail wraps all of that: you build an Email with subject, recipients, and body, and Chilkat renders it to MIME and delivers it. Modern submission commonly uses implicit TLS on port 465 (SmtpSsl = true).

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    success := false

    //  Demonstrates the MailMan.SendEmail method, which sends a single Email object through the
    //  configured SMTP server.

    mailman := chilkat.NewMailMan()

    //  Configure the SMTP server connection.
    mailman.SetSmtpHost("smtp.example.com")
    mailman.SetSmtpPort(465)
    mailman.SetSmtpSsl(true)
    mailman.SetSmtpUsername("user@example.com")
    mailman.SetSmtpPassword("myPassword")

    //  Build the email to send.
    email := chilkat.NewEmail()
    email.SetSubject("Test email from Chilkat")
    email.SetFrom("alice@example.com")
    email.AddTo("Bob","bob@example.com")
    email.SetBody("Hello, this is a test message.")

    //  Send the email.

    success = mailman.SendEmail(email)
    if success == false {
        fmt.Println(mailman.LastErrorText())
        mailman.DisposeMailMan()
        email.DisposeEmail()
        return
    }

    fmt.Println("Email sent.")

    //  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.

    mailman.DisposeMailMan()
    email.DisposeEmail()