Swift

Get the Complete MIME Header of an Email

Demonstrates the read-only Chilkat Email.Header property, which returns the complete MIME header generated from the current in-memory email object. Because this property is read-only, you modify individual fields through their corresponding properties or header methods rather than assigning to Header directly. This example sets a subject, from, and recipient, then prints the full MIME header.

Background: A MIME email is made of two parts separated by a single blank line: the header and the body. The header is a list of Field-Name: value lines — familiar ones include From, To, Subject, and Date, plus structural fields like Content-Type and MIME-Version. Reading the raw header is useful for debugging exactly what a message will look like on the wire.

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Swift


func chilkatTest() {
    //  Demonstrates the read-only Email.Header property, which returns the
    //  complete MIME header of the email, generated from the current in-memory
    //  email object.

    let email = CkoEmail()!

    email.subject = "Test subject"
    email.from = "mary@example.com"
    email.add(to: "Joe", emailAddress: "joe@example.com")

    //  Header is read-only.  Modify individual fields through their properties
    //  or header methods rather than assigning to Header.
    print("\(email.header!)")

}