Phone interview

Well I had an interview a couple of weeks ago but found out this past week that I didn't get the job, but all is well because I have a phone interview with another company tomorrow.
One question I have is I know that it is customary that you send a thank you email to the interviewer. What do you do if they will not give you an email address or a business card. By the way this is the first company that I have seen that does not have business cards.
One question I have is I know that it is customary that you send a thank you email to the interviewer. What do you do if they will not give you an email address or a business card. By the way this is the first company that I have seen that does not have business cards.
Comments
As for the business card thing... you sure they're legit?
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