Bash script to send an email through mailgun api. Example usage: sh mailgun.sh

mailgun.sh

#!/bin/bash'
GREEN="\e[92m"
RED="\e[91m"
NC="\033[0m"
printf "${GREEN}Mailgun send email CLI${NC}\n"
function required {
  while [[ true ]]; do
    local _name=$1
    local _label=$2
    local _multiline=$3
    echo -e "$_label"
    echo -n "$_name: "
    if [[ ! -z "$_multiline" ]]; then
      _line=""
      while read -r l; do
        if [[ -z "$l" ]]; then
          break
        fi
        _line="$_line"$'\n'"$l"
      done
    else
      read _line
    fi
    IFS="" read -d "" $_name <<< "${_line}"

    if [[ ! -z "$_line" ]]; then
      break
    fi
  done
  return 0
}
required "domain" "Please input your domain name"
required "api_key" "Please input your api key"
required "from" "Your email. e: Full Name <yourmail@domain.tld>"
required "to" "Recipient:"
required "subject" "Email subject"
required "message" "Your message. ${RED}Double enter to quit input message.${NC}" 1
domain="$(echo -n ${domain})"
api_key="$(echo -n ${api_key})"
from="$(echo -n ${from})"
to="$(echo -n ${to})"
subject="$(echo -n ${subject})"
message="$(echo -n ${message})"

echo -e "Send it?"
echo -ne "\e[1m[Y/n]\e[0m"
read -n 1 -r -s confirm
if [[ "${confirm}" == "Y" || "${confirm}" == "y" ]]; then

  echo -ne "sending...\n"
  url="https://api.mailgun.net/v3/$domain/messages"
  req="curl --user 'api:${api_key}' '$url' -F from='${from}' -F to='${to}' -F subject='${subject}' -F text='${message}'"
  echo -e '\e[1m'
  eval $req
  echo -e '\e[0m'
else
  echo -ne "\n\e[1mCancelled\e[0m\n"
  exit 0
fi