The best CRO newsletter for most people is Speero's The eXperimental Revolution, a free weekly email on CRO and experimentation.
Pair it with GuessTheTest for real A/B test case studies and Baymard Institute for ecommerce UX research.
If you work on SaaS or apps, add a growth newsletter.
If you sell online, add one ecommerce newsletter such as DTC Newsletter.
How we picked: we read each newsletter's own about or subscribe page in November 2026 and checked the cadence, price and audience it lists there.
We did not judge them by summarizing their posts.
Every cadence and price below comes from the linked page.
| Name | What it is | Best for | Cost/cadence | Link |
|---|---|---|---|---|
| The eXperimental Revolution (Speero) | CRO and experimentation frameworks, templates and news | CRO specialists and test program leads | Free, weekly | speero.com |
| GuessTheTest | A/B test case studies you guess before seeing the winner | Building test intuition | Free every other week; paid Pro tier | guessthetest.com |
| Experiment Nation | Community newsletter for experimenters | People new to CRO | Weekly | experimentnation.com |
| Baymard Institute | Ecommerce UX research articles | Ecommerce sites | Free, weekly | baymard.com |
| Nielsen Norman Group | UX research articles and videos | Any site, UX basics | Weekly | nngroup.com |
| Growth.Design | Comic-style product psychology case studies | SaaS and app teams | Weekly | growth.design |
| CXL newsletter | AI and B2B marketing news | B2B marketers | Free, weekly | cxl.com |
| Lenny's Newsletter | Product and growth newsletter and podcast | Product managers, SaaS | Free and paid tiers | lennysnewsletter.com |
| Growth Unhinged | Startup marketing, pricing and growth | SaaS pricing and PLG | Weekly, Wednesdays | growthunhinged.com |
| Elena's Growth Scoop | Product-led growth newsletter | SaaS growth teams | Weekly; paid $9/month or $99/year for archive | elenaverna.com |
| DTC Newsletter | Ecommerce tactics, breakdowns and news | DTC brands | Daily | dtcnewsletter.com |
| 2PM | Analysis of media and commerce | Ecommerce leaders | Weekly; paid Executive Membership | 2pml.com |
| Modern Retail | Retail and DTC news | Ecommerce and retail news | Daily on weekdays; E-commerce Weekly on Fridays | modernretail.co |
| Retail Dive | Retail industry news | Retail and DTC news by topic | Daily, plus topic weeklies | retaildive.com |
If you're starting out, three is enough: one on testing, one on UX research and one for your business type.
Our guide to becoming a CRO specialist covers what else to learn alongside them.
The 14 best CRO and ecommerce newsletters
The list runs from newsletters about testing itself, to UX research, to growth, to ecommerce news.
The first group teaches you how to run experiments. The others give you ideas to test.
1. The eXperimental Revolution (Speero)
What it is: Speero's newsletter. Its subscribe page promises "free frameworks, templates, news, trends, events, and hot takes on CX, CRO, and Experimentation every week."
Why it's worth it: It's one of the few newsletters that stays on CRO and experimentation rather than general marketing.
Speero is an experimentation agency, so expect a practitioner's view and some promotion of its own services.
Best for: CRO specialists and anyone running a test program.
Where: speero.com/the-experimental-revolution
Cost/cadence: Free, weekly.
2. GuessTheTest
What it is: A site of real A/B test case studies where you guess the winner before you see the result.
The free sign-up form says new case studies are "sent to you every other week."
Why it's worth it: Guessing first shows you how often your instincts are wrong, which is the main lesson of testing.
It works the same way as browsing the tests in our archive with the result hidden.
Best for: Building test intuition, and finding ideas for your next hypothesis.
Where: guessthetest.com
Cost/cadence: Free newsletter every other week. Full access to the case study library needs a paid Pro membership; group plans start at $27 per member per month, billed monthly.
3. Experiment Nation
What it is: The newsletter of a CRO community whose stated mission is to "make CRO a viable career for those interested."
Subscribers get an eBook of 60+ learnings from experimenters, 65 recorded conference sessions, interviews and news.
Why it's worth it: The newsletter also gives subscribers access to the community's Slack channel, so you get people to ask as well as things to read.
See our list of CRO communities for more.
Best for: People new to CRO or moving into it from another role.
Where: experimentnation.com/newsletter
Cost/cadence: Weekly.
4. Baymard Institute
What it is: Free UX research articles from Baymard, which studies ecommerce usability.
Its sign-up says they are "delivered weekly, ad-free full-length research articles."
Why it's worth it: Baymard's research covers checkout, product pages, search and mobile shopping.
The articles are a solid source of test ideas, though a guideline from research is still something to test on your own site, not a guaranteed win.
Best for: Ecommerce teams. Less useful for SaaS or lead gen. Pairs with our ecommerce UX guide.
Where: baymard.com/newsletter
Cost/cadence: Free, weekly. Baymard's full research database is a separate paid product.
5. Nielsen Norman Group
What it is: The UX research firm's email, which its site describes as "weekly UX articles, videos, upcoming courses" and more.
Why it's worth it: NN/g writes about usability for every kind of site, from forms to navigation to AI tools.
It's a good grounding in why users get stuck, which is where most test ideas start.
Best for: Anyone who needs UX basics, on any type of site. Expect promotion of NN/g's paid courses.
Where: nngroup.com (sign-up form on the site)
Cost/cadence: Weekly.
6. Growth.Design
What it is: Growth.Design publishes case studies as short comics.
Its homepage offers "fun weekly comics that dig into the psychology behind great products – in just 5 minutes."
Why it's worth it: The case study library covers onboarding, trials, paywalls, checkout and offboarding at brands such as Duolingo, Blinkist and GoDaddy.
They're quick to read and easy to share with a team.
For the theory behind them, see our psychology guides.
Best for: SaaS and app teams working on onboarding and upgrades.
Where: growth.design
Cost/cadence: Weekly.
7. CXL newsletter
What it is: CXL's newsletter is now billed as "free, weekly, on AI and B2B marketing" and "the newsletter for the marketing engineer."
The page says it has 100,000+ marketers subscribed.
Why it's worth it: CXL built its name on CRO training, but this newsletter has moved to AI and B2B marketing.
Subscribe if that's your work too. If you want pure CRO, Speero (entry 1, which calls itself "Speero by CXL") is the closer fit.
Best for: B2B and SaaS marketers. Not the right pick for ecommerce CRO.
Where: cxl.com/newsletter
Cost/cadence: Free, weekly. The page also promotes a paid eight-week live cohort.
8. Lenny's Newsletter
What it is: A product and growth newsletter and podcast. The about page says "Join 1,000,000+ subscribers."
Why it's worth it: It covers product, growth and careers for tech companies.
Paid subscribers get every issue, past writing, and a private Slack community the page puts at 30k+ members.
Best for: Product managers and SaaS growth teams. Little of it is about ecommerce.
Where: lennysnewsletter.com/about
Cost/cadence: Free and paid tiers. The about page doesn't list a publishing schedule.
9. Growth Unhinged
What it is: Kyle Poyar's newsletter. The about page says it "shares practical advice on startup marketing, pricing, and growth" with data-rich reports, deep dives and case studies.
Why it's worth it: Pricing and packaging is a large share of the focus, and the about page notes Kyle Poyar's background at the pricing firm Simon-Kucher.
Useful if you test pricing pages, trials or plans.
Best for: SaaS founders and growth teams.
Where: growthunhinged.com/about
Cost/cadence: Weekly, every Wednesday morning, to 85,000+ subscribers according to the about page.
10. Elena's Growth Scoop
What it is: Elena Verna's growth newsletter. The about page says subscribers "receive a new post via email every Thursday or Friday."
Why it's worth it: Elena Verna writes about product-led growth for SaaS.
The about page lists 99K+ subscribers across product, marketing and analytics.
Best for: SaaS teams working on activation, free plans and upgrades.
Where: elenaverna.com/about
Cost/cadence: Weekly. A paid subscription ($9/month or $99/year) unlocks posts older than two weeks.
11. DTC Newsletter
What it is: A daily ecommerce newsletter. The homepage invites you to "join 155,000+ readers already getting daily expert-led ecommerce tactics, breakdowns, and market updates."
Why it's worth it: Issues mix news with brand breakdowns and CRO examples, so it's a steady source of ideas for a direct-to-consumer site.
Treat claimed lifts in any newsletter as ideas to test, not proof.
Best for: DTC and Shopify brands.
Where: dtcnewsletter.com
Cost/cadence: Daily.
12. 2PM
What it is: Web Smith's newsletter, which its about page describes as analyzing "the intersection of media and commerce and how those principles are applied elsewhere."
Why it's worth it: It's strategy, not tactics: long essays on how brands, retail and media are changing.
Good context for people setting direction, less useful if you want a test idea for Monday.
Best for: Ecommerce founders and senior leaders.
Where: 2pml.com/about
Cost/cadence: Regular readers get a weekly letter. Paid Executive Members get extra briefs, reports and databases.
13. Modern Retail
What it is: A retail trade publication with several newsletters.
The daily is "delivered at 6 a.m. eastern every week day" and covers Amazon, DTC brands and retail.
Why it's worth it: Its E-commerce Weekly newsletter breaks down "the week's biggest headlines at the intersection of retail and digital" each Friday.
One email a week is enough to stay current.
Best for: Ecommerce teams that want industry news.
Where: modernretail.co/newsletters
Cost/cadence: Daily on weekdays, plus E-commerce Weekly (Fridays) and Supply Chain Weekly. Modern Retail+ is a separate paid membership.
14. Retail Dive
What it is: A retail news site with a daily newsletter and topic weeklies you choose on sign-up.
Why it's worth it: You can pick only the topics you need: DTC Weekly comes every Tuesday, Marketing Weekly every Wednesday and Tech Weekly every Thursday.
Best for: People who want retail news without a daily email.
Where: retaildive.com/signup
Cost/cadence: Daily Dive, plus weekly topic editions.
Which newsletters fit your work
If you run A/B tests for a living
Subscribe to Speero and GuessTheTest. Add Experiment Nation if you want a community to ask questions in.
If you run an ecommerce site
Baymard for UX research, and either DTC Newsletter or Modern Retail's E-commerce Weekly for news.
If you work on SaaS or apps
Growth.Design for onboarding and paywall psychology, and Growth Unhinged or Elena's Growth Scoop for pricing and growth.
If you run a lead gen site
Nielsen Norman Group for forms and usability, plus Speero for test method. Our lead gen guide covers the rest.
How to get the most from them
- Keep it to three or four. A newsletter you skim every week beats ten you archive unread.
- Save ideas, not articles. When an issue suggests a change, write it down as a test idea with the page and metric it would affect. A learning repository works well for this.
- Check claims against real results. A tactic that worked for one brand often fails for another. Search our test archive for the same change before you copy it.
- Read the losses. Newsletters favor wins. Tests that lost or came out flat teach just as much.
- Mix formats. Add a few CRO podcasts for your commute and a CRO book for depth. Follow the CRO experts whose work you trust.
What tests say about newsletters themselves
Our archive has tests on newsletter sign-ups and newsletter content.
They're a reminder that small copy and placement changes can move sign-ups a lot, and that "best practice" for the email itself often comes out flat.
- Showpo changed the copy next to its newsletter checkbox at checkout and got +175.52% sign-ups (VWO).
- Noble Studios put the Travel Nevada sign-up form inside an auto-opening widget: +385% newsletter sign-ups.
- Laura Roeder Social Media used a customer quote as the newsletter headline: +24.31% sign-ups.
- MarketingExperiments used the first article's headline as the email preheader and it lost: -12% clicks.
- MarketingExperiments also tested short vs long newsletter copy and found no difference in unique clicks.
For more, see our guides to email capture and email A/B testing.
MarketingExperimentsMarketingExperimentsWatch out for
- Vendor newsletters. Many CRO newsletters come from agencies or tool companies. They can still be useful, but they will promote their own services.
- Case studies without numbers. A "big lift" with no sample size, test length or metric is a story, not evidence.
- Changing topics. Newsletters change focus over time. CXL's is a good example: it now covers AI and B2B marketing. Check the subscribe page before you sign up.
Reading about CRO is a good start, but some teams would rather have someone run the tests for them.