Send lots of emails with attached files using GOV.UK Notify

README.md

Send lots of emails with attached files using GOV.UK Notify

Usage

Create a template with a single ((link_to_file)) placeholder in Notify, and an API key. Then call the script with the filename to attach, the API key, and the template ID as environment variables, and a list of email addresses on standard in.

export API_KEY="redacted"
export TEMPLATE_ID="redacted"
export FILENAME_TO_UPLOAD="whatever.docx" 
cat list-of-email-addresses | ./email-with-notify.rb

email-with-notify.rb

#!/usr/bin/env ruby

require 'notifications/client'

client = Notifications::Client.new(ENV.fetch("API_KEY"))

File.open(ENV.fetch("FILENAME_TO_UPLOAD"), "rb") do |f|
    upload = Notifications.prepare_upload(f)
    template_id = ENV.fetch("TEMPLATE_ID")
    ARGF.readlines.each do |line|
      line = line.strip
      puts "Attempting for #{line}"
      emailresponse = client.send_email(
          email_address: line,
          template_id: template_id,
          personalisation: {
              link_to_file: upload
          }
      )
      puts "Succeeded for #{line}"
    rescue Notifications::Client::RequestError => error
      puts "Error for #{line} - #{error.code}: #{error.message}"
    end
end