Build a Website with NYLAS API implementation

We would like to implement [login to view URL] API on our website using CORE PHP. Developer will use bootstrap templates provided by us to develop: 1. Implement NYLAS API. Allow user to add different email accounts (email service provider). 2. Use our template to display each user inbox, calendar and contacts. Including search (will display similar to this [login to view URL] - just example). Will have to provide different tabs to display different email service providers. Also, need to use AJAX or best possible methods to refresh pages automatically with minimum data flow. 3. Allow user to create/(delete/move - single or multiple select) email, calendar events and contacts 4. Allow user to set labels for the email, events and contacts (similar to Gmail Labels - single or multiple select). 5. Allow user to set star for the email, events and contacts (single or multiple select). 5. Display notification if there are new emails, contacts and events. Also, display notification minutes before event. Allow user to snooze. 6. Display space used for each account. Display different folders from the account e.g. sent or trash. Allow user to mark the message/s for the spam.