BuySellAds vs Swapstack:Which is more popular?
In September 2026, BuySellAds had more branded searches than Swapstack among newsletter sponsorship marketplaces worldwide. BuySellAds had about 1,300 branded searches, while Swapstack had 260. BuySellAds made up 17.4% of all newsletter sponsorship marketplace searches we track, and Swapstack accounted for 3.5%. When we asked ChatGPT and Google AI Overviews about newsletter sponsorship marketplaces, BuySellAds appeared in three of the five answers and Swapstack in two. Swapstack was mentioned before BuySellAds in two out of three answers that named either.
Who do people search for more?
BuySellAds, about 5 searches for every 1 for Swapstack
Who does AI mention more?
BuySellAds, mentioned in 3 of 5 answers, Swapstack in 2
Who does AI recommend more?
Swapstack, named ahead of BuySellAds in 2 of 3 answers
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Top newsletter sponsorship marketplaces in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, BuySellAds was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Swapstack was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Swapstack was listed before BuySellAds 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.
Paved1st
Passionfroot2nd
SponsorGap3rd- Swapstack4th
beehiiv5th- BuySellAds6th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Paved4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Passionfroot3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- BuySellAds3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- beehiiv3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Swapstack2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- SponsorGap2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
See every answer about newsletter sponsorship marketplaces
5 answers
Asked ChatGPT
“Which newsletter sponsorship marketplace should I use?”
Asked ChatGPT
“What are the best newsletter sponsorship marketplaces?”
Asked ChatGPT
“What's the best newsletter sponsorship marketplace for sponsors for a newsletter?”
Searched Google, AI Overview
“newsletter sponsorship marketplace”
Searched Google, AI Overview
“find newsletter sponsors”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is BuySellAds or Swapstack more popular in search?
This chart shows how often people search Google for BuySellAds and Swapstack by name. Each line represents a brand's share of searches for all six newsletter sponsorship marketplaces we track, month by month, from English-language searches worldwide.
Share of searches by month for BuySellAds, Swapstack. The figures are in the table below the chart.
View monthly share of searches table
| Month | Passionfroot | BuySellAds | beehiiv | Swapstack | SponsorGap | Paved |
|---|---|---|---|---|---|---|
| Oct 2025 | 43.3% | 36.4% | 6.8% | 8.9% | 2.1% | 2.5% |
| Nov 2025 | 46.1% | 31.6% | 8.5% | 9.5% | 2.2% | 2.2% |
| Dec 2025 | 53.2% | 28.8% | 5.8% | 8.6% | 2% | 1.6% |
| Jan 2026 | 52% | 28.7% | 7.3% | 7% | 2.5% | 2.5% |
| Feb 2026 | 50.4% | 27.3% | 6.9% | 8.2% | 3.6% | 3.6% |
| Mar 2026 | 50.3% | 27.8% | 6.9% | 8.3% | 3% | 3.6% |
| Apr 2026 | 56.3% | 25.2% | 6.8% | 6.2% | 3.3% | 2.1% |
| May 2026 | 61.3% | 22.1% | 6.6% | 5.5% | 2.9% | 1.5% |
| Jun 2026 | 60.8% | 21% | 6.9% | 5.5% | 3.6% | 2.3% |
| Jul 2026 | 75.3% | 14.8% | 3.2% | 3% | 2.4% | 1.3% |
| Aug 2026 | 71.4% | 17.2% | 4.6% | 3.4% | 1.9% | 1.5% |
| Sep 2026 | 72.5% | 17.4% | 3.5% | 3.5% | 1.9% | 1.2% |
How has the BuySellAds and Swapstack comparison changed over the last 12 months?
3 findings
- BuySellAds was ahead of Swapstack in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, BuySellAds’ share of searches among newsletter sponsorship marketplaces worldwide moved from 36.4% to 17.4%, and its estimated monthly branded searches moved from 1.6K to 1.3K.
- Across the 12 months ending September 2026, Swapstack’s share of searches among newsletter sponsorship marketplaces worldwide moved from 8.9% to 3.5%, and its estimated monthly branded searches moved from 390 to 260.
How did search popularity change for newsletter sponsorship marketplaces worldwide in September 2026?
2 changes
Estimated monthly branded searches for Swapstack worldwide fell 33.3% over 12 measured months, from 390 to 260 in September 2026.
Estimated monthly branded searches for BuySellAds worldwide fell 18.8% over 12 measured months, from 1.6K to 1.3K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using BuySellAds’ and Swapstack’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.
BuySellAds
1 branded search term
- buysellads
Swapstack
1 branded search term
- swapstack
Other head-to-heads among newsletter sponsorship marketplaces
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