send email command line

email.txt

From: "User Name" <noreply@your-smtp-server.co>
To: "John Smith" <to-who@yahoo.com>
Subject: This is a test

Hi John,
I’m sending this mail with curl thru my gmail account.
Bye!

send.sh

#!/usr/bin/env bash

curl -v --ssl-reqd \
--url 'smtps://your-smtp-server.co:465' \
       --user 'username:password' \
--mail-from 'noreply@your-smtp-server.co' \
--mail-rcpt 'to-who@yahoo.com' \
--upload-file email.txt