Post interview thank you note...what do you recommend I do?

Should I email the recruiters who landed me an interview thank you notes? I know typically you would email the interviewers afterwards but unfortunately I wasn't given their contact information and was didn't really feel comfortable asking for business cards ( I interviewed with 4 different people). I didn't want to seem pushy by asking for cards.

Again, should I just send a general email to the two recruiters and thank them for setting up the interviews?

Thanks.

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