There is no need to create a temporary email when you can create any number of free hotmail/yahoo/gmails or using any other free service that isn't a temporary one...
This is exactly what I have done and created multiple gmail accounts:
Maybe you know from my previous posts that I applied this solution and have multiple
offertyww@gmail.com, ofertyww1..., ofertyww9... and so on addresses.
Anyways even such an amount of emails didn't save me from spam and overwhelming...
Still, after some time they are so filled with spam that there is no way to use them further.
This is the main evidence that most bounty campaigns will eventually sell your email, and when this happens, there is no way, that this will not happen again, because they can do it multiple times and the actual buyer will also resell it further. This circle will continue until there will be a new buyer and the amount of spam will grow at an alarming rate.