Unless it's with some tiny airline, you won't get a ticket. Airlines realised years ago that they only look at tickets at check-in at the airport, where they give you a boarding pass and that's what you need to get you through the rest of the airport. And at the check-in desk, they can look you up on their computer. So, uh, what do you need a ticket for? So they stopped issuing paper tickets and saved a lot on paper and printing. It's been 13 years since I last had an actual air ticket in the old style.
All you will get is a confirmation email, which should include a booking number so you can check in online if the airline offers that.
As you didn't book with the actual airline, you might like to check with them that you DO have a booking. If they say yes, you're fine. Personally what I would always do is if you find a good price on a site like this, go to the actual airline's web site and if you find that price there, book it there. Then you KNOW you have your seat.