Custome Application development

Looking for expert in AI technology and custom application developer. I want to create an application using the AI technology to do automation task for third party web application (Agency Management System). This application will have multiple user with different email. I will need UI to have for the application. I want the software to extract content of the email. Content can be image or pdf or in the email body text. Once the email content is extract, we have condition that needs to be satisfied for automatic task to be trigger using the API. If those conditions are satisfied, then task needs to be trigger in the third part software. We want the AI to understand the email we receive so if the condition are not written it can automate it on it’s on. We want to make sure we train it. We do have API from the third party web application that can be used to integrate in our custom application. We need the cost of operating this application, need to know what platform you will be using. Where can we host the application?. Please apply only if you are expert in this field. I will provide more details once you contact me.