Swift

Render an Email to MIME in a StringBuilder

Demonstrates the Chilkat MailMan.RenderToMimeSb method, which renders an Email object as MIME text and appends the result to a StringBuilder, without sending the email. This example renders a message into a StringBuilder and prints it.

Background: This is the StringBuilder version of RenderToMime. Appending into a StringBuilder is more efficient when the MIME is large or when you plan to further inspect or manipulate it — searching, replacing, or accumulating additional text — without creating extra intermediate string copies.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the MailMan.RenderToMimeSb method, which renders an Email object as MIME text
    //  and appends the result to a StringBuilder (without sending the email).

    let mailman = CkoMailMan()!

    //  Build the email to render.
    let email = CkoEmail()!
    email.subject = "Rendered email"
    email.from = "alice@example.com"
    email.add(to: "Bob", emailAddress: "bob@example.com")
    email.body = "This message is rendered to MIME in a StringBuilder."

    //  Render the MIME into a StringBuilder.
    let sbMime = CkoStringBuilder()!

    success = mailman.render(toMimeSb: email, renderedMime: sbMime)
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    print("\(sbMime.getAsString()!)")

}