Wordpress Plugin - messaging and email script

I am looking for a skilled developer to create a WordPress plugin that will enhance the messaging capabilities of my website. The plugin should have the following features: I need someone to write a wp plugin to store, send and announce messages and send email. It will need to interact with Google's Firebase by API and Supabase Since the messages will be coming from and to a mobile phone app and will need to be stored and relayed as email and from email to message Will be using email piping but will need a php script written to go with it Most likely will not be using an email box except maybe as a backup Incoming email will be forwarded to the script and will need to be parsed to message db and to phone via API, Users will either create messages from a form on their phone or in wp gravity form or form you create in plugin. There is a chat plugin that could be integrated with, so you may be asked to see if you can modify that code since it would handle most things on the wp side. - Private messaging: Users should be able to send and receive private messages within the website. - Email notifications: The plugin should have the ability to send email notifications to users when they receive a new message. - Integration with WordPress: The plugin should seamlessly integrate with the existing WordPress infrastructure. Skills and Experience: - Proficiency in PHP: The plugin should be developed using PHP, so the ideal candidate should have a strong command of this programming language. - WordPress development: Experience in developing WordPress plugins is essential. - Familiarity with messaging systems: The candidate should have experience in creating messaging systems or integrating existing messaging solutions into websites. Please provide examples of previous work and demonstrate your expertise in WordPress plugin development.