Wordpress Plugin to send emails using Pepipost JSON API - open to bidding

Looking forward to building a Wordpress plugin to send all WordPress outgoing emails which uses default wp_mail() should go using Pepipost API. Users will activate this plugin in their WordPress installation. Here is a sample example of our existing Pepipost Wordpress Plugin, but this uses SMTP for sending emails. Now, instead of SMTP emails should go using JSON API: [login to view URL] The scope of the project will remain same as above plugin. Just instead of SMTP not emails should go using Pepipost's JSON API. Sample Plugin which uses APi for sending emails: [login to view URL]