Swift

Send an Email via SMTP

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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Swift


func chilkatTest() {
    var success: Bool = false

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

    let mailman = CkoMailMan()!

    //  Configure the SMTP server connection.
    mailman.smtpHost = "smtp.example.com"
    mailman.smtpPort = 465
    mailman.smtpSsl = true
    mailman.smtpUsername = "user@example.com"
    mailman.smtpPassword = "myPassword"

    //  Build the email to send.
    let email = CkoEmail()!
    email.subject = "Test email from Chilkat"
    email.from = "alice@example.com"
    email.add(to: "Bob", emailAddress: "bob@example.com")
    email.body = "Hello, this is a test message."

    //  Send the email.

    success = mailman.sendEmail(email: email)
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    print("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.

}