Hello,
I will setup Amazon SES to send an email and can resolve your all issues as per your requirement. I have 5+ years of experience in different hosting server including AWS, GCP, Digital ocean and installing and configure mailing software like Mailwizz, PowerMTA, Mumara, Sendy and many more.
I will pass all the authentications like SPF, DKIM, DMARC for bulk mailing.
I would like to have a word with you to make things crystal clear.
Thank You