-record(message, {
    from :: gleam@option:option(lumenmail@types:address()),
    reply_to :: gleam@option:option(lumenmail@types:address()),
    to :: list(lumenmail@types:address()),
    cc :: list(lumenmail@types:address()),
    bcc :: list(lumenmail@types:address()),
    subject :: gleam@option:option(binary()),
    text_body :: gleam@option:option(binary()),
    html_body :: gleam@option:option(binary()),
    attachments :: list(lumenmail@message:attachment()),
    headers :: list(lumenmail@message:header()),
    priority :: lumenmail@message:priority(),
    message_id :: gleam@option:option(binary()),
    in_reply_to :: gleam@option:option(binary()),
    references :: list(binary())
}).