Hello
I want to test pinsubmit offers on pop mobile, so what is top sources for pinsubmit offers?
Thanks
Any pop-source can work for pins, as long as they allow them, which they all do unless you are too aggressive with the creatives 
Start with the most known ones and then look for the forgotten diamonds
So : popads, popcash, adcash, propeller, zeropark ... these should keep you busy for a while.
Hey HangMan,
Ping me, I have popunders available on Mobile, lets talk when you have some time.
Hey Hangman,
You could take the offer you plan on promoting and pop it in SimilarWeb and see where the "display" sources are coming from.
Most of the times you can see the top places driving traffic to it 
Best,
V
adcash, propeller, wwwpromoter, exoclick
Hello, Hangman!
Great to know you’re testing something new!
PIN submits are available in all niches. Indeed, there can be PIN submits for sweepstakes, adult services, content downloads and much more. That's why the traffic source may vary according to the vertical you’re working in.
Generally, the following sources have a big amount of pop mobile traffic with good quality: Adcash, Popads, Popcash, Exoclick and Propeller Ads.
Moreover, you can try promoting PIN submits, not only with pop traffic, but with different banner formats, as you’ll get great results. I recommend you start with 300x100, because it not only has good volumes but the competition is not as fierce as on the bigger one - 300x250.
Did you already test offers with a different flow, such as the ones that have direct billing? This billing flow is processed through the user's mobile carrier. Therefore, his phone number is detected right away and he doesn't need to send a text message or insert a PIN number. Trust me: both the flow and performance are far better.
Good luck!
Cheers!