No Alex, I can not tell you yet, since I do not use Una yet in real condition (I assure you that I am happy to be able to do it), I can currently only talk about my experience under dolphin. Note that it's my dolphin experience that makes me write everything I've written here on una.io from the beginning.
Now in Dolphin, with S.T.P, each couple ip address, pseudo mail address is definitively "Out" since directly stored at STP.
Then, if they try to re-register, before registration, the STP com is interrogated and the registration is refused if positive test.
You say "Delette Spammer" is equivalent to "Delette with content", do you mean that the data is also transferred to STP and controlled at registration as in Dolphin? If so, is it a good point that I did not know, you confirm that it works the same way?
If that's the case, then I agree with you, it's the same. Happy that it is so. So I'm already a little reassured.
But despite this, they change, ip, email address and keep coming back. However, I have seen a decrease in their activity since you joined STP, so it is not used as you expected when you did.
With Twilio, the idea is that we have a good way to neutralize them effectively, the same principle as STP in fact, but internally with something they can not easily change. It is a shame not to use it.
I will not use Twilio if it is not so, simply because I know in advance that these people will cost me a fortune, a little more than 50% of the checks. I understand what you are telling me, there are sites where it is not worth it, but I assure you that it is my biggest problem, sorting between real and false profiles is what takes me the most time.