How long did it take people that you work with to get used to your new last name? In particular, I am thinking of coworkers or clients in other offices who maybe don't ever actually see you and only know you via an email address. I have some coworkers/clients in that capacity, and I am anxious about them not knowing who I am when they get an email. Is it appropriate to send an email letting them know my name has changed? What do you think?