Is it a wise decision to email graduate professors my provisional certificate of bachelor's degree? I am a prospective MS student. I am considering emailing graduate professors expressing my interest to work as research assistants under the professor's supervision.  Now I have a provisional certificate (no statement of expected date of result publishing) of my bachelor's degree, and I will get the main certificate of my bachelor's degree in the month of May or June. But the application deadline for graduate program is March and April. Is it a wise decision to email graduate professors my provisional certificate of bachelor's degree?
I wouldn't include it in the initial email. The initial email should just be a few sentences where you show that you know what kind of work they do, and try to convince them that you have something interesting to add to the group. I would attach a short CV with your predicted graduation date, but not the provisional certificate.