I hope this email finds you well. I am writing to request an extension on my project due in two days. I understand that this is an inconvenience, but I am facing circumstances outside of my control that have limited my ability to complete the project in the allocated timeline. I am confident that I will be able to finish the project by X date, and I would rreally appreciate the leniency. 

Thank you for your time and understanding. 

Sincerely,
[Your Name]
Caro Professor Smith,
Scrivi una mail al tuo professore per chiedere una proroga su un progetto in scadenza tra due giorni.