User registration email is never received

[milikicn]

I have started the application and tried registering a new user so I could log in. Upon creating a new account, I am displayed with a message that the registration link has been sent to me. But I have never received the registration email.

Since emails are sent via postal library, one thing that might be the problem is that I am running the application from my local machine and the mode used for sending emails in Salava (ns salava.core.mail) is set to local. From the Postal Github page:

... [local] will locally inject the message into whatever sendmail-compatible interface your system provides.

I am not sure how technically this works, but I think the problem is that my machine does not fulfill this prerequisite.

If I change manually in the salava.core.mail namespace function send-mail to look like something like this (I will redact my AWS email server credentials with # sign), email sending will work. Similarly, you can set up any other SMPT server to send emails from (e.g. Gmail).

(defn send-mail [subject message recipients]
  (try+
    (let [host {:host    "email-smtp.us-east-1.amazonaws.com"
                    :user    "##################"
                    :pass    "#################################"
                    :port     587}
          data {:from    mail-sender
                    :to        recipients
                    :subject subject
                    :body    [{:type    "text/plain; charset=utf-8" 
                                   :content message}]}]
      (send-message host data))
    (catch Object _
      ;TODO log an error
      )))

Is there any other way to enable email sending or you think it makes sense to expand send-mail function (as per my example) and the config file resources/config/core.edn to include SMTP account details?