Function mail_smtp::send

pub fn send<A, S>(
    mail: MailRequest, 
    conconf: ConnectionConfig<A, S>, 
    ctx: impl Context
) -> impl Future<Item = (), Error = MailSendError> where
    A: Cmd,
    S: SetupTls, 

Sends a given mail (request).

• This will use the given context to encode the mail.
• Then it will use the connection config to open a connection to a mail server (likely a Mail Submission Agent (MSA)).
• Following this it will send the mail to the server.
• After which it will close the connection again.

You can use MailRequest: From<Mail> (i.e. mail.into()) to pass in a mail and derive the envelop data (from, to) from it or create your own mail request if different smtp envelop data is needed.