The Newsletter Ad Index: September 2026
Who bought newsletter ads in September 2026, counted from the issues we read. A brand counts once per newsletter, however many issues it bought.
Top sponsors
| # | Sponsor | Newsletters | Last month |
|---|---|---|---|
| 1 | Kate Spade Outlet · E-commerce & retail | 19 | – |
| 2 | Google Cloud · Developer tools | 14 | – |
| 2 | Skechers · Consumer goods | 14 | – |
| 4 | HubSpot · Sales & marketing software | 12 | 4 |
| 4 | Nibbles · Food & drink | 12 | – |
| 6 | Granola · Productivity & collaboration | 11 | 11 |
| 6 | Lands' End · E-commerce & retail | 11 | – |
| 6 | Sundays For Dogs · Consumer goods | 11 | – |
| 9 | The Pets Table · Consumer goods | 10 | – |
| 10 | Anthropic · AI & ML | 9 | – |
| 10 | Atlassian · Productivity & collaboration | 9 | 4 |
| 10 | Datadog · Data & analytics | 9 | – |
| 10 | Netline · AI & ML | 9 | – |
| 10 | Sentry · Developer tools | 9 | 2 |
| 10 | Tiger Data · Data & analytics | 9 | 2 |
| 16 | Adobe · Media & entertainment | 8 | – |
| 16 | Gartner · Data & analytics | 8 | – |
| 16 | Insurify · Banking & insurance | 8 | – |
| 16 | Kalshi · Investing & trading | 8 | 50 |
| 16 | Microsoft · AI & ML | 8 | 50 |
| 16 | Wispr Flow · AI & ML | 8 | 1 |
| 22 | Attio · Sales & marketing software | 7 | 8 |
| 22 | Databricks · Data & analytics | 7 | – |
| 22 | Experience Columbia SC · Media & entertainment | 7 | – |
| 22 | PwC · Finance & fintech | 7 | – |
| 22 | Vanta · Security | 7 | – |
| 22 | WorkOS · Developer tools | 7 | 11 |
| 28 | Roku Ads Manager · Sales & marketing software | 6 | 50 |
| 28 | CollabWORK · HR & recruiting | 6 | – |
| 28 | Alumni Ventures · Investing & trading | 6 | 19 |
| 28 | AWS · AI & ML | 6 | – |
| 28 | Box · Productivity & collaboration | 6 | 19 |
| 28 | Deel · HR & recruiting | 6 | 50 |
| 28 | Front · Productivity & collaboration | 6 | – |
| 28 | Teleport · Security | 6 | 11 |
| 28 | Sézane · Consumer goods | 6 | – |
| 28 | Unscriptedconf · Developer tools | 6 | – |
| 28 | Walmart Business · E-commerce & retail | 6 | – |
| 39 | Cornbread Hemp · Consumer goods | 5 | – |
| 39 | Framer · Developer tools | 5 | 50 |
| 39 | Unblocked · Developer tools | 5 | 11 |
| 39 | Inngest · Developer tools | 5 | – |
| 39 | Doroni · Investing & trading | 5 | – |
| 39 | Master.dev · Developer tools | 5 | 4 |
| 39 | Modash · Sales & marketing software | 5 | – |
| 39 | Ory · Developer tools | 5 | – |
| 39 | The Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research Institute · Health & wellness | 5 | – |
| 39 | Pique Life · Health & wellness | 5 | 4 |
| 39 | Plaid · Finance & fintech | 5 | 19 |
| 39 | Rokt · Sales & marketing software | 5 | – |
Last month: the brand's rank in August; – means no placement we read that month.
Newsletters buying ads in other newsletters
Growth spend: newsletters paying, or trading, for a slot in another newsletter. Kept out of the ranking above.
New to newsletters
Brands we saw sponsor a newsletter for the first time in September 2026, in newsletters we've read for at least two months.
- Nibbles · Food & drink in ATXtoday, Audio Software Hub, Career Brew and 9 more
- Databricks · Data & analytics in AI for Work, TLDR AI, TLDR Data and 4 more
- Front · Productivity & collaboration in Bagel Bots, Ins7ghts, Latestly AI and 3 more
- Inngest · Developer tools in ??DiamantAI, Making AI Accessible with Louis-François, The Neural Maze and 2 more
- Doppel · Security in AI for Work, Cybersecurity Dive Daily, The Deep View and 1 more
- Green Coffee Company · Investing & trading in The Backhaul Report, The Crypto Alarm, The Daily Upside and 1 more
- OpenArt · AI & ML in AI for Work, Lenny's Newsletter, Superhuman AI and 1 more
- Remote · HR & recruiting in AI Breakfast, Ins7ghts, OnlyCFO's Newsletter and 1 more
- TLDR AI · Newsletters in Nomad for Less, Python Weekly, Remoteur and 1 more
- VAST Data · Data & analytics in Big Technology, Sources, TLDR AI and 1 more
- Bilt · Finance & fintech in Marketing Brew, Morning Brew, Short Squeez
- ClickHouse · Data & analytics in Data Engineer Things, TLDR Data, TLDR Dev
- Genesys · Sales & marketing software in Big Technology, CIO Dive Daily, CX Dive Daily
- Jack and Jill · AI & ML in Not Boring, Superhuman AI, The Code
- Opsera · Developer tools in AI for Work, Making AI Accessible with Louis-François, The Deep View
Topics by sponsors
How many brands bought each kind of newsletter. We add newsletters every week, so compare months with care.
| Newsletter topic | Sponsors |
|---|---|
| Software & developers | 192 |
| AI | 190 |
| Finance & investing | 170 |
| Marketing & growth | 137 |
| Local news | 108 |
| Industry trade | 93 |
| Culture & entertainment | 87 |
| Business & economy | 87 |
| Startups & venture | 65 |
| Politics & policy | 64 |
| Cybersecurity | 52 |
| Retail & e-commerce | 51 |
Kinds of company buying
| Sponsor's business | Sponsors |
|---|---|
| Developer tools | 126 |
| AI & ML | 110 |
| Sales & marketing software | 104 |
| Finance & fintech | 91 |
| Investing & trading | 86 |
| Consumer goods | 77 |
| Media & entertainment | 71 |
| Health & wellness | 65 |
| Security | 61 |
| Productivity & collaboration | 46 |
| Education & courses | 46 |
| E-commerce & retail | 39 |
Counted from the issues we read: public archives and the issues newsletters email to subscribers. A sponsor in a newsletter we don't read isn't counted. For where to buy, see newsletters to advertise in, by topic.
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