SPF, DKIM, DMARC
The three complementary email authentication standards that let a receiving server verify a message genuinely comes from the domain it claims and decide how to handle failures.
In more detail
SPF, DKIM, and DMARC work together to prove an email is legitimately from the domain it claims. SPF declares which servers may send for the domain, DKIM cryptographically signs the message so tampering and forgery can be detected, and DMARC ties the two together and tells receivers what to do when a message fails, along with reporting.
Together they protect both deliverability and brand. Properly authenticated mail is far more likely to reach the inbox, and DMARC in particular defends a domain against being spoofed by impersonators. Misconfiguring them is a common and quiet cause of mail silently landing in spam.
Where this shows up at Ceven
Ceven respects these authentication standards for any outbound email in a workflow, since honoring them is part of keeping sending deliverable and trustworthy. It works with the customer's own authenticated sending setup rather than being the mail domain of record, and the resulting sends are recorded in the audit trail.