Postmark vs Red Sift:Which is more popular?
In September 2026, Red Sift had more branded searches than Postmark among DMARC monitoring tools worldwide. Red Sift had about 2,990 branded searches, while Postmark had 1,590. Red Sift made up 12% of all DMARC monitoring tool searches we track, and Postmark accounted for 6.4%. When we asked ChatGPT and Google AI Overviews about DMARC monitoring tools, Postmark appeared in three of the four answers and Red Sift in one. Postmark was mentioned before Red Sift in two out of three answers that named either.
Who do people search for more?
Red Sift, about 88% more searches than Postmark
Who does AI mention more?
Postmark, mentioned in 3 of 4 answers, Red Sift in 1
Who does AI recommend more?
Postmark, named ahead of Red Sift in 2 of 3 answers
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Top DMARC monitoring tools in ChatGPT and Google AI Overviews
In three ChatGPT questions and one Google AI Overview, Postmark was mentioned in three out of four: in all three ChatGPT answers, but not in the Google AI Overview. Red Sift was mentioned in one out of four: in one of the three ChatGPT answers, but not in the Google AI Overview. Postmark was listed before Red Sift in two out of three answers that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
dmarcian4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
EasyDMARC4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
PowerDMARC4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
Valimail3 of 4Named in 3 of 3 ChatGPT answersNamed in 0 of 1 Google answers- Postmark3 of 4Named in 3 of 3 ChatGPT answersNamed in 0 of 1 Google answers
- Red Sift1 of 4Named in 1 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Dmarcly0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
See every answer about DMARC monitoring tools
4 answers
Asked ChatGPT
“Which DMARC monitoring tool should I use?”
Asked ChatGPT
“What are the best DMARC tools?”
Asked ChatGPT
“What's the best DMARC tool for a small business?”
Searched Google, AI Overview
“dmarc tools”
Searched Google, AI Overview
“dmarc monitoring”
Google showed no AI Overview for this search.
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 22, 2026.
Is Postmark or Red Sift more popular in search?
This chart shows how often people search Google for Postmark and Red Sift by name. Each line represents a brand's share of searches for all seven DMARC monitoring tools we track, month by month, from English-language searches worldwide.
Share of searches by month for Red Sift, Postmark. The figures are in the table below the chart.
View monthly share of searches table
| Month | dmarcian | EasyDMARC | Valimail | Red Sift | PowerDMARC | Postmark | Dmarcly |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 25.9% | 31.6% | 14.1% | 9.6% | 11.5% | 4.2% | 3.2% |
| Nov 2025 | 23.7% | 29% | 15.8% | 10.3% | 12.9% | 4.7% | 3.6% |
| Dec 2025 | 24.8% | 30.5% | 16.6% | 9% | 10.9% | 4.9% | 3.3% |
| Jan 2026 | 27.4% | 27.4% | 14.9% | 9.7% | 12.2% | 5.4% | 3% |
| Feb 2026 | 27.3% | 27.3% | 14.8% | 10.1% | 12.1% | 5.4% | 3% |
| Mar 2026 | 25.2% | 30.9% | 13.7% | 10.9% | 11.2% | 5.4% | 2.7% |
| Apr 2026 | 25% | 30.6% | 13.6% | 10.8% | 11.1% | 6.2% | 2.7% |
| May 2026 | 29% | 29% | 12.9% | 10.3% | 10.4% | 5.7% | 2.6% |
| Jun 2026 | 24.7% | 30.3% | 13.5% | 11.2% | 10.9% | 6.7% | 2.7% |
| Jul 2026 | 26.7% | 26.7% | 14.5% | 11.6% | 11.7% | 6.4% | 2.4% |
| Aug 2026 | 27.2% | 27.2% | 14.8% | 11.9% | 9.9% | 6.6% | 2.4% |
| Sep 2026 | 26.5% | 26.5% | 14.5% | 12% | 11.7% | 6.4% | 2.4% |
How has the Postmark and Red Sift comparison changed over the last 12 months?
3 findings
- Red Sift was ahead of Postmark in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Postmark’s share of searches among DMARC monitoring tools worldwide moved from 4.2% to 6.4%, and its estimated monthly branded searches moved from 1.3K to 1.6K.
- Across the 12 months ending September 2026, Red Sift’s share of searches among DMARC monitoring tools worldwide moved from 9.6% to 12%, and its estimated monthly branded searches held steady at 3K.
How did search popularity change for DMARC monitoring tools worldwide in September 2026?
2 changes
Red Sift’s share of searches among DMARC monitoring tools worldwide has gained ground for 3 months in a row, from 11.2% to 12% in September 2026.
Estimated monthly branded searches for Postmark worldwide rose 21.4% over 12 measured months, from 1.3K to 1.6K in September 2026.
How are branded searches counted?
4 search terms
Brandwave collects information about searches that people make online using Postmark’s and Red Sift’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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