Swift

Save an Email to a .eml File

Demonstrates the Chilkat Email.SaveEml method, which converts the email object to EML and saves it to a file. An EML file contains the complete RFC822/MIME message — headers, bodies, related items, and attachments. This example builds a message and saves it.

Background: Saving as .eml writes the message in the universal MIME format that virtually every mail client can open, making it ideal for archiving, sharing, or handing a message to another program. It is the counterpart to LoadEml. A saved .eml also retains Chilkat's CKX- metadata headers (a way to store your own metadata with the email; they are always stripped before an email is sent), so .eml is the recommended way to persist a message even within Chilkat-based software. A separate Chilkat XML format (SaveXml) exists as an alternative, but offers no metadata advantage over .eml.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the SaveEml method, which converts the email object to EML and saves it to
    //  a file.  An EML file contains the complete RFC822/MIME message, including headers,
    //  bodies, related items, and attachments.

    let email = CkoEmail()!
    email.subject = "Save as EML"
    email.from = "alice@example.com"
    email.add(to: "Bob", emailAddress: "bob@example.com")
    email.body = "Hello, this message will be saved as a .eml file."

    //  Save the email to a .eml file.
    success = email.saveEml(path: "qa_output/message.eml")
    if success == false {
        print("\(email.lastErrorText!)")
        return
    }

    print("Saved to message.eml.")

    //  Note: The path "qa_output/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.

}