This person has offered gear time and time again. Never responds always routes you to an email.
He may be simply looking to get valid emails. Then attack the passwords to the email hoping to steal that way.
I always advise to not go to email on a newbie as the danger can be simply email theft.
on the board right now on the first page I see 6 bad threads maybe more.
I suspect the following threads:
https://bitcointalksearch.org/topic/selling-bitmain-antminer-s17-pro-53th-5178186
https://bitcointalksearch.org/topic/wts-pangolin-m10-miners-33ths-2145-watts-5177432
https://bitcointalksearch.org/topic/2-x-s9-13t-with-bitmain-psu-5172119
https://bitcointalksearch.org/topic/wts-4-x-s17-pro-new-and-6-x-z11-new-5171283
https://bitcointalksearch.org/topic/antminer-l3-x5-a3-5175442
https://bitcointalksearch.org/topic/m.52080651
the six listed all look shady and I would not do a deal with out escrow.
I would give a toss away email as all of the above may want to steal your email just as much as steal your btc/crypto.