Custom email plugin development for Woocommerce

I want to send out payment reminders in bulk to selected customers of my woocommerce shop – therefore I need an experienced plugin/woocommerce developer that can help me to achieve this task. What I need I need someone who can help me to create an Woocommerce extension that sends out bulk emails to selected customers of my choosing in bulk. The plugin should contain the usual order info and an additional text plus the original invoice as attachment. I want to be able to choose the customers that should receive the payment reminder in the order backend of my woocommerce shop and send out up to 100 payment reminders at the same time. Short requirements: • Select customers in woocommerce backend • Send out custom email that I can modify in backend to selected customers (up to 100 at the same time) • Attach original invoice to email You are free to either modify an existing plugin (free or paid) to do this or create a custom woocommerce plugin to do the above task. If you develop a custom plugin you agree with your bid that I have all rights to the plugin afterwards. In order to apply you need to have experience with plugin development and Woocommerce. Looking forward to your bids!