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The Top 💯 Newsletter Sponsors of 2021:

200+ newsletters tracked. 2,500+ sponsors and counting. These are the ones buying a LOT of ads...


Who Sponsors Stuff has spent 2021 tracking what brands are buying ads on what newsletters.


To be honest, we didn't know what to expect. Maybe we'd find that only a small group of sponsors were active in the space, and we'd more or less exhaust the pool of sponsors in a few months, only finding new ones occasionally as new companies were founded or existing companies slowly entered the space.


Instead, we found the the universe of sponsors on email newsletters is vast and growing rapidly. We find, on average, 10 new sponsors per weekday—50 new sponsors a week.


A LOT of companies are spending a LOT of money on newsletters, big and small.


And some are buying a lot more ads than others...


For the end of the year, we compiled the top 100 purchasers of newsletter sponsorships, by frequency, from our database.


The top of the list is dominated by brands who've bought multiple sponsorships (sometimes dozens) in one newsletter. Facebook (errr... Meta?), for instance, has spent a ton of money with Axios, as it fights off bad press and the threat of regulation in Washington, D.C. SmartAsset, meanwhile, runs frequently in Kiplinger's Closing Bell, seeking people considering their retirement options.


Take a look through the full list. Some names you'll have seen many times in your inbox... Some may never have crossed your radar before.


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If you're a registered Who Sponsors Stuff member, you can see data on where these newsletters are buying.


If you're a paying member on our Entrepreneur plan or Sales Pro, you can see contact information for decision makers who buy newsletter ads.


(If you're looking to take your newsletter ad-sales program to the next level in 2022, scroll to the bottom for our Special Offer to purchase a 1-hour strategy call & sales training with your year's subscription to Entrepreneur. See you in 2022!)


Each sponsor's name is followed by the number of sponsorships we've detected attributed to them in our database in 2021.



1. SmartAsset (597)


2. Facebook (468)


3. Vanguard Personal Advisor (430)


4. M1Finance (417)


5. 1440 (283)


6. Flatfile (229)


7. Northern Trust (226)


8. Cytonics (210)


9. Deloitte (196)


10. Attest (190)


11. Masterworks.io (173)


12. Ourcrowd (172)


13. Amazon (171)


14. Stack Overflow (170)


15. Adobe (168)


16. Apollo Neuro (167)


17. YieldStreet (159)


18. Iterable (154)


19. Babbel (154)


20. The Motley Fool (153)


21. SimpliSafe (153)


22. Vuori (152)


23. Google (151)


24. Public.com (138)


25. PhRMA (130)


26. Muse (129)


27. Noom (129)


28. Salesforce (129)


29. Lightstep (125)


30. Dell Technologies (119)


31. Wise Bread (119)


32. The Ascent (114)


33. Lemonade (106)


34. Affirm (105)


35. Walmart (103)


36. Electric (100)


37. Lohika (99)


38. General Motors (98)


39. Livestorm (98)


40. The Wall Street Journal (97)


41. Fiverr Business (97)


42. Skuid (93)


43. Boxcast (93)


44. Route (90)

45. Cockroach Labs (89)


46. CompareCards (LendingTree) (87)


47. Outreach (85)


48 Impact (85)


49. Sailthru (78)


50. United Health Group (78)


51. Morning Brew (78)


52. Fidelity (77)


53. Miso Robotics (76)


54. Domini Impact Investment (75)


55. Blueboard Inc (74)


56. Chevron (73)


57. DiversyFund (73)


58. Brilliant (71)


59. Huckberry (69)


60. eToro (68)


61. Graze (68)


62. Shogun (67)


63. LaunchDarkly (67)


64. LendingTree (66)


65. Golden Retirement (64)


66. Scout APM (62)


67. Laird Superfood (62)


68. Blockchain.com (62)


69. StackAdapt (60)


70. PubMatic (60)


71. Caliber Home Loans (58)


72. Shortcut (57)


73. Morgan Stanley (56)


74. Oracle Netsuite (55)


75. Personal Capital (55)


76. Dollar Flight Club (55)


77. Bright Cellars (54)


78. Goldman Sachs (53)


79. Typeform (52)


80. Data Grail (52)


81: MainStreet (50)


82. Fundrise (50)


83. Cambium Learning (50)


84. FanDuel (50)


85. Bank of America (49)


86. Zoominfo (49)


87. Attentive (48)


88. Nexo (47)


89. Sharework (47)


90. Uber (45)


91. ChaosSearch (45)


92. Revtown (44)


93. Comcast (44)


94. Helix (44)


95. STRV (43)


96. JP Morgan Chase & Co (42)


97. Zendesk (42)


98. Onfolio (42)


99. Datadog (40)


100. Roundel (39)