I need an email marketing specialist

I need a specialist in black hat email marketing, I have a list of more than 200 thousand emails from customers who purchased in some stores and I want to offer them some offers, however, as it is a black offer, I cannot send them in mass, because my knowledge is limited with corporate email domains... Like DKIM, DMARC...

You can PM us with below details.

1) You want to send emails via your domain and your sender or external sender with your domain ?
2) In how many days your planning to complete email sending ?

Thanks