There is a customized field in vendor card 'Requester Email' in which there is an email id.
So to send an email there is a Send Email button in the ribbon of Vendor Card to compose an email so in the 'To' field of that page i want the Vendor card 'Requester Email' field data
I have tried doing this by page extension of Email outbox or in the page extension of Vendor card and also through codeunit but none of these are working
Please suggest a complete solution.