Send emails from the browser

1. JMAP server

For Fastmail, create an API token with the Email and Email submission scopes under Settings → Privacy & Security → API tokens. Your credentials are only sent to the server above and are not stored.

2. Message

Kotlin code

val mailer = jmapMailer("https://api.fastmail.com/jmap/session") {
    bearer("<api-token>")
}

emailBuilder {
    from("")
    to("")
    subject = "Hello from Kotlinmailer"
    text = "This email was sent by a Kotlin/JS website, straight from the browser over JMAP."
    withHTML {
        body {
            h2 { +subject }
            p { +text }
        }
    }
}.send(mailer)

Result

Nothing sent yet.