Need to Hire Email Specialist – Need to Send 3,000 Cold Emails a day

Looking to Hire an Email Marketing Specialist who can help me send about 3,000 Emails a day with High deliverability and also dealing with Spam reports
(I have Lists and Scripts)

Purpose is Cold Email – Sequence of 4 – 7 Emails to same list. (1 Email on different Days)

I 've tried a little bit of elastic email, sendgrid, quickmail, mailshake but I ended up burning my domain due to spam reports.
I need guidance and looking to hire someone who can either help me sending emails or with…

Need to Hire Email Specialist – Need to Send 3,000 Cold Emails a day