You can click on "My Listia" under your username in the top right(or the Listia logo in the top left), then scroll down to "Verify Your Account" on the left.
There it'll show different ways you can verify your account; good luck!
I have clicked on everything and looked everywhere but did not see anything that says "verify account" or anything similar. I am getting emails from Listia. Does that mean it has already been verified? I've only been on here less than a week.
Ok, after clicking the top left Listia logo while logged in:
1. You might want to try to find (Ctrl-F) the word "verify" using your browser.
2. If that doesn't work: On the left side of the screen, there should be a block labeled "My Account." Scroll down, and below that is a block labeled "Credits." Scroll down more, and below that should be a block "Account Settings," with "Verify Your Account" in that block.