Help you... how, exactly?

What is 'Steam'?

Any suggestions?

Contact Steam support? .. or maybe it just got into "spam" folder? Happened to me too occasionally.

I did, and it was not there.

All of my Steam emails go to the Spam folder for whatever reason. Did you check that??

(NOTE: Yahoo dot com address is what I'm using for Steam) It's one of the three states of matter for the molecule H2O I think.
I'm not sure why they would send emails (or how) though.

Okay, try cancelling and logging in again. Possibly have to wait. Might work.

Mostly the verification email comes in quickly. At rarer times, the email will simply stall and not arrive till later. Usually, I get this issue when I try logging in through the main site itself. Authenticating from the Steam client , seem to expedite it's arrival. I would also check the Steam forums to see if a bunch of Steam users are having the same problem. Once, it was a breakdown on Steam's end and users couldn't log on properly or at all.

Like others have suggested, steam support will be better equipped to help you out with this. You can try getting another verification email by trying to login again on the steam website. the vapour into which water is converted when heated, forming a white mist of minute water droplets in the air. Your welcome. :P

Ask a stupid question...... :P

Check account details and the email listed in the client and on the site. If both those match it's a system issue on their end. It'll be under "EMail Settings"

UPDATE: I got an email, I tried the code, but I got an error saying that it expired and I need to use a more recent one.

Well, to be fair, the answer was probably more stupider (see what I did there?) than the question.