I use free email account. I did send email to the service provider to report the situation that I can't receive email but no reply, same as coinpot. So, I don't know whose problem it is since both coinpot and the service provider do not reply.
I did receive the email confirmation successfully before.
CoinPot has become problem to users who want to link account from coin address in Moonbit to existing CoinPot address. My BitFun address was linked automatically, but Moonbit gave instruction of how to link which I have done and send payments/sign signatures from the addresses without being linked.
I have sent several mail to CoinPot contact over this without response.