Hi [name of interviewer],
I’m so looking forward to our interview today, but wanted to let you know that [your reason for being late]. In spite of this, I anticipate arriving at [a time based on your best guess for how many minutes behind you’re running].
I apologize for the inconvenience and completely understand if this new time does not work with your schedule today. If that’s the case, would you be open to rescheduling? I’m available [provide two or three times and dates] if that would be more convenient for you.
Thanks so much,I strongly suspect that most hiring managers won't really respond well to this e-mail, but who knows? Readers, any instances where you managed to make up for the tremendous faux pas of being late to an interview? What do you think of this e-mail?