How to Look Up TXT Records for Every Email Address on a List

To look up TXT records for every address on an email list, query the TXT records of the domain after the @ in each address in DNS and name the ones you recognise. The bulk email domain TXT record lookup does this for every address in a pasted list or CSV and gives each one a row.

The check reads the domain, not the mailbox.

Why check this on an email list

Verification records show which services a company has proven it controls the domain to, and SPF and DMARC show how it sends mail. A list of thousands of addresses has far fewer unique domains, so one query per domain is cheap.

The by-hand way

1. Take the domain after the @, for example acme.example from sam@acme.example.
2. Query its TXT records, for example dig TXT acme.example.
3. Read each record and work out what it is: SPF, DMARC, DKIM or a service's verification string.
4. Repeat for every unique domain.

For a plain list of domains, see look up TXT records for a list of domains.

Step 1: paste the addresses

Paste addresses one per line, or upload a CSV. Only the unique domains are sent, never the mailbox names.

Step 2: run the check

Press Look up TXT records. One TXT query per domain is made in DNS, from our server. Nothing is sent to the domains, and no mail is sent.

Step 3: read the result

Result	What it means
Has TXT records	The domain publishes TXT records; the recognised ones are named
Multiple SPF records	More than one record starts v=spf1, which RFC 7208 doesn't allow
No TXT records	The domain exists but publishes none
Doesn't exist	The name isn't in DNS, so mail to it will bounce

The CSV carries the recognised records, the SPF count and every record beside each email. Only addresses at a domain that doesn't exist are left out of the list handed on to the mailbox check.

What this check cannot do

• It checks the domain, not the mailbox.
• Only the TXT records at the domain itself are read, not _dmarc or other names.
• A record is named only when its text matches a known pattern.
• Up to 100 unique domains a run without an account, 500 signed in.

To read underscore names such as _dmarc use the bulk TXT record lookup.

Next: the rest of the list

For the addresses that remain, use the verify page: the first 100 checks are free with a Google sign-in, no card.

Try it now

Paste your list into the bulk email domain TXT record lookup at simpleverifier.com.