Newsletter Sponsorship Statistics 2026

Of the newsletters NewsletterFIT has evaluated, 1,479 (10.6%) show sponsorship in their own posts and 12,428 show none. In the last 365 days, sponsor placements were detected in 1,386 of the 71,164 Substack and beehiiv newsletters tracked. 1.3% of the 258,204 posts indexed in the last 90 days carried an explicitly marked sponsorship (3,274 posts).

Updated Nov 4, 2026 · from sponsor placements detected in indexed posts · methodology

Newsletters with a sponsor detected
1,386
last 365 days
Brands sponsoring
1,674
last 90 days
Posts that are sponsored
1.3%
last 90 days
New sponsor brands
593
first detected in 30 days

Sponsored posts by month

Posts with an explicitly marked sponsorship, and the distinct brands and newsletters behind them.

Read across months with care. These are counts of what NewsletterFIT has indexed, and the index grew sharply during 2026. A rise from one month to the next mostly reflects wider coverage, not growth in the sponsorship market.

MonthSponsored postsBrandsNewsletters
Dec 2025
37
2523
Jan 2026
24
2219
Feb 2026
20
1916
Mar 2026
45
3836
Apr 2026
43
4136
May 2026
65
6657
Jun 2026
102
10588
Jul 2026
226
198157
Aug 2026
542
383300
Sep 2026
1,079
738489
Oct 2026
1,597
990691
Nov 2026 (so far)
116
11496

Brands in the most newsletters

Last 90 days, by newsletters with a detected placement.

  1. 1Front28 newsletters · 50 posts
  2. 2Amazon17 newsletters · 18 posts
  3. 3Granola14 newsletters · 26 posts
  4. 4HubSpot11 newsletters · 17 posts
  5. 5OpenAI9 newsletters · 20 posts
  6. 6Google9 newsletters · 13 posts
  7. 7State7 newsletters · 10 posts
  8. 8Finally7 newsletters · 9 posts
  9. 9AWS6 newsletters · 17 posts
  10. 10Atlassian6 newsletters · 13 posts
  11. 11Attio6 newsletters · 10 posts
  12. 12Coder6 newsletters · 8 posts
  13. 13BOX6 newsletters · 6 posts
  14. 14STACKAI5 newsletters · 12 posts
  15. 15Kalshi5 newsletters · 12 posts
  16. 16Nooks5 newsletters · 11 posts
  17. 17Lovable5 newsletters · 9 posts
  18. 18MEMOKET5 newsletters · 8 posts
  19. 19Adobe5 newsletters · 7 posts
  20. 20Smarter CRM5 newsletters · 7 posts

Topics where sponsorship is most common

Share of a topic's newsletters with a sponsor detected in the last 365 days (topics with 50+ newsletters).

  1. Local government25.6% of 82
  2. Developer productivity22.2% of 54
  3. Startup funding21.7% of 69
  4. Developer tools16% of 81
  5. Community events15.5% of 97
  6. Enterprise AI15.1% of 53
  7. Productivity tools14.5% of 76
  8. LLM security13.3% of 90
  9. Public policy13.3% of 75
  10. AI agents12% of 258
  11. Creator economy11.8% of 153
  12. Cloud infrastructure11.6% of 69
  13. OpenAI11.1% of 54
  14. Enterprise AI adoption11.1% of 54
  15. Remote work10.8% of 93
  16. AI security10.6% of 113
  17. Campaign finance10.1% of 89
  18. Financial planning9.6% of 52
  19. Product Management9.5% of 84
  20. Brand strategy9.5% of 63

Sponsorship by newsletter size

By the subscriber figure the platform shows publicly; newsletters that show none are left out.

Publicly shown subscribersNewslettersWith a sponsorShare
1K–10K7,7942042.6%
10K–100K4,6472866.2%
100K+7309312.7%

Questions these figures answer

How many newsletters accept sponsors?
Of the newsletters NewsletterFIT has evaluated, 1,479 (10.6%) show sponsorship in their own posts and 12,428 show none. In the last 365 days, sponsor placements were detected in 1,386 of the 71,164 Substack and beehiiv newsletters tracked.
What share of newsletter posts are sponsored?
1.3% of the 258,204 posts indexed in the last 90 days carried an explicitly marked sponsorship (3,274 posts).
Which brands sponsor the most newsletters?
Over the last 90 days, the brands detected in the most newsletters were Front, Amazon, Granola, HubSpot and OpenAI. 1,674 brands were detected sponsoring at least one newsletter in that period.
Do bigger newsletters carry more sponsors?
Yes. 12.7% of newsletters with 100K+ publicly shown subscribers had a sponsor placement detected in the last 365 days, against 2.6% of those with 1K–10K subscribers.
How often does a sponsored newsletter run sponsors?
The median newsletter with any sponsor detected ran 1 detected placements over the last 365 days.

How these numbers are made

A placement counts only when a post carries an explicit sponsorship marker ("sponsored by", "presented by", "together with" and similar) and the sponsor name is confirmed. Unmarked mentions, affiliate links and a newsletter promoting itself are not counted, so these figures are a floor, not an estimate of the whole market. Subscriber figures are what Substack and beehiiv show publicly. Posts are counted from 71,164 tracked newsletters; 49,843 of them posted in the last 90 days.

You may cite these figures with a link to this page.

Every sponsor and where they advertise Best newsletters by topic