Hello,
We can configure a full, secure mail server for your project. For marketing projects, a mail server will need specific authentication protocols implemented to achieve maximum deliverability (the measure of how many emails are actually delivered to target inboxes and not to Spam/Junk folders).
We will implement DKIM, DMARC and SPF authentication, TLS and SSL encryption, both to maximise deliverability. We will also check to ensure mail server IP address is not on spam blacklists.
What you need is a VPS server and a domain name. Linux is the best OS for this. VPS servers can be bought at Linode or Vultr and domains at Godaddy. This can be implement in 1 day.