We need Outlook 365 plugin developped in C#/Visual Studio, that will take a parameter of an user email and will update the mail signature, so that when that user try to compost a new mail or reply to an email.
The signature value will be dynamic according to the email.

Deliveries:
- Code source
- Detailed Documentation to update the plugin and to deploy it from Office 365 Admin Center
- Demo of the solution

NB:  Please, can you tell me in your proposal and in main lines :