What is DNS Verification (TXT)?
Proving domain ownership by publishing a provider-issued token as a DNS TXT record. BYOB custom-domain and sender setup both use this challenge before activating routing or sending.
Related terms
Sender Identity
The verified domain or address a provider is permitted to send from, proven through DNS records. BYOB projects verify sending domains before campaigns so transactional mail leaves from a trusted name.
SPF Record
A DNS TXT entry naming the mail servers allowed to send for a domain, checked against the envelope sender. Receivers distrust or reject mail from unlisted servers, so publishing SPF is step one of authentication.
DKIM Signing
Cryptographic email signing where the sender attaches a signature header verified against a DNS-published public key. Passing DKIM proves the message survived transit unmodified and truly came from the domain holder.
Return-Path Alignment
Matching the envelope sender domain used for SPF with the visible From domain that recipients see. Aligned domains let inbox providers credit authentication to the brand instead of the sending platform.
Complaint Feedback Loop
A mailbox-provider channel reporting when recipients mark mail as spam, so senders can suppress complainers immediately. Ignoring complaints burns sender reputation far faster than any single campaign gains.
Sender Reputation
The trust score mailbox providers assign to a sending domain or IP from engagement, complaints, and authentication history. High reputation lands in the inbox; low reputation diverts identical content to spam.