Outlook and Gmail Plugin for our web based application

We need an Outlook and Gmail plugin which our users using Outlook or Gmail can install and use to offer our solutions. We have a web based email productivity tool which helps users to track their email and content. Users may use outlook or Gmail to send the mails and using the plugin they can send the content developed in our web app directly from their outlook or gmail. Prior experience is this kind of work is needed. Our web app is developed in PHP & Mysql. Necessary api's will be provided to you. INCASE YOU CAN DEVELOP ONLY 1 project ( Outlook or Gmail ) you shall be paid half of the project cost. Payment terms - No advance will be paid directly, All payments will be made via freelancer only. Milestones will be set and 1st milestone will be when we see some % of work and not for starting the project