2-hour task : Add 1 new feature to our PHP-based email plugin for Roundcube

Before you bid, please take a minute to read this document in full. There is no rush. Also view our "Client profile" before you respond. We are a reputed employer with excellent previous ratings and have been awarding projects for 10+ years... (Budget: $10 - $30 AUD, Jobs: Backend Development, Coding, Full Stack Development, MySQL, PHP, Programming, Software Development, Web Application)