Do this follow up on an interview – it helps.
Take the time to send a thank-you to eveyone you met with. If you didn’t get someone’s name/ spelling, it’s okay to loop back with your contact (or even the front desk person) and ask for that info. If you can’t or don’t want to do that, pull them up using ZoomInfo (yes, I’m a shameless hussy of a plugger).
As for format, I’m going to surprise a few of you. I’m with an Internet firm, and yet I still prefer a handwritten thank-you over e-mail every stinkin’ time. It means more. Since about ZERO of your competitors will be doing the same, you’re going to stand out. That said, e-mail is quick. To match that, write the damned thing immediately after the interview.
Before you go in, buy some plain off-white or grey thank you notes. Stay conservative on the font. Bring them with you in your briefcase/ portfolio (please tell me you don’t just show up empty handed to an interview), envelopes stamped. Write them while in your car in the lot, waiting for the subway, riding your mule, whatever. Nothing too profound, unless there was a point you wanted to return to (in one or two sentences, max). Find a mailbox or post office – even better – close to the office and mail ’em in. Chances are they’ll be in the right hands the next morning.
After that, it’s okay to call or e-mail to check in on your status. Don’t do it right away – generally, give the company about a week. If they gave you a more defined time-frame (a la, “you’re the first peson we’ve seen, and we’re in first rounds for the next two weeks”), follow their lead on timing. You don’t want to seem desperate, or like a pest.
All that said, if you receive (or are close to receiving) another offer, let the other firms you have met with know this. It’s not pressure, it’s just polite: if you are the lead candidate somewhere else, they’ll appreciate knowing that they have to fish or cut bait.