Need to order an extension

Hello, I need a specific extension for Thunderbird to be made according to my requirements. How can I order it and where is the right place to find a specialist?

It needs to perform three actions: 1) open unread emails from a certain account, 2) copy contacts from an email’s body and save them, 3) send replies. More detailed info I will send in a 5 mnts video.

Please help me.
Thank you!