It&#x27;s true it is harder; definitely much harder if you&#x27;re not a sysadmin by trade. These days to get mail to deliver you not only need to support SMTP, but also TLS, SPF, DKIM, DMARC at a minimum. You also need to make sure that you aren&#x27;t inadvertently a source for relaying, or non delivery report (NDR) &#x2F; delivery status notification (DSN) bounce source (vis a vis spam with faked return paths etc).<p>In short if you don&#x27;t &#x2F; won&#x27;t &#x2F; can&#x27;t do the above you are indeed much better paying someone else to do it (preferably at scale with attention to detail like fastmail).