A lot of sending domains still have no DMARC at all
Answer Plenty of sending domains still publish no DMARC record. Unspam's September 24, 2026 announcement said 49 percent of senders in its benchmark, across the twelve months ending that day, had not implemented DMARC. That is their sample, not the whole internet. If the solo ad domain is in that condition, you should hear it before you pay.
The note that started this: Unspam Releases DMARC Monitoring That Shows When It Is Safe to Enforce, EIN Presswire, September 24, 2026.
Three days ago the story was a decorative tag on records that exist. Today's story is the domains that never published the record. Both are common. They are not the same repair. A pct=100 record is a policy with a useless extra word. No record is no policy. The main risk for a buyer is a seller who has not done a publication that has been ordinary advice for years.
The announcement, released through EIN Presswire on September 24, 2026, is the note that started this. Unspam used it to introduce a monitoring service. This desk is not reviewing that product. The figure in the release is the part that belongs here. In their Email Deliverability Benchmark, checks run through the platform in the twelve months to September 24, 2026, 49 percent of senders had not implemented DMARC. The release also recalls a timeline: Google and Yahoo began enforcing sender rules that include DMARC in February 2024, Microsoft followed for high-volume senders to Outlook.com in May 2025, Gmail stepped up to rejections of non-compliant bulk mail in November 2025, and the IETF published DMARC as RFC 9989 in May 2026. That timeline is their summary of public milestones. The 49 percent is their benchmark, not a law of nature.
What share of senders lacked DMARC in that release?
Unspam's September 24, 2026 announcement said that in its benchmark, covering checks through that day over twelve months, 49 percent of senders had not implemented DMARC.
Forty-nine is almost a coin flip inside that set. It is large enough to explain why a random solo ad quote often comes back blank when you ask. It is not large enough to excuse the blank. The other half of the same benchmark had implemented a record. Has a record is the first question. What the record does is the second. A seller who fails the first does not reach the second.
Do not wave 49 percent at a seller as if you caught them in a study. Check the domain. If the lookup shows no record, you do not need the benchmark. The benchmark only tells you that a blank is still common this month.
Does that 49 percent describe every domain?
No. It describes the senders in Unspam's benchmark for that window. It is not a census, and it is not your seller until you check the domain in the quote.
Different studies count different piles. One pile is domains tested because someone sent mail through a tool. Another pile is the largest domains on the web, many of which are not newsletters. Mixing them produces a confident paragraph and a meaningless number. This post uses one pile, named, with the window the release named.
Your seller is a third pile: one domain, one list, one quote. Best solo ad vendors are graded by whether they will show you the record, not by whether they resemble a percentage in a press release.
What do you do if the solo ad domain has no DMARC?
Treat it as a fact in the quote. You can still walk away, or you can pay with your eyes open, knowing the domain has not published a policy.
Walking away is the clean version. Paying is a choice if the rest of the quote is strong and the price reflects a skipped step. Pretending the step does not matter, because half a benchmark also skipped it, is how the half stays a half. The provider that wanted the record still wants it.
Buy solo ads from a name you looked up. If the lookup is empty, write no DMARC in the note next to the price. The September 24 release is a count of how many senders would have a blank in that box. It is not a reason for your box to stay blank.