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"https://buttondown.com/hillelwayne/archive/knowing-about-things-is-cheaper-than-knowing/", "published_at": "2026-05-28T16:03:01+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c564ac3a", "title": "Gift details on the subscriber portal", "url": "https://buttondown.com/blog/portal-gift-state", "published_at": "2026-05-28T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c5802348", "title": "Portal link in the archive nav", "url": "https://buttondown.com/blog/portal-link-in-archive", "published_at": "2026-05-25T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd463f7d4d5c", "title": "Assumptions weaken properties", "url": "https://buttondown.com/hillelwayne/archive/assumptions-weaken-properties/", "published_at": "2026-05-20T15:13:16+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c64b1c72", "title": "First, add no friction: How micropayments lost and subscriptions won", "url": "https://buttondown.com/blog/why-micropayments-do-not-work", "published_at": "2026-05-15T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd463feeccc6", "title": "Points are a weird and inconsistent unit of measure", "url": "https://buttondown.com/hillelwayne/archive/points-are-a-weird-and-inconsistent-unit-of/", "published_at": "2026-05-13T15:56:37+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c66366a3", "title": "Filter subscribers and automations by source", "url": "https://buttondown.com/blog/source-filter", "published_at": "2026-05-08T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c7218e79", "title": "Automations, rebuilt", "url": "https://buttondown.com/blog/automations-rebuild", "published_at": "2026-05-07T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd464016531e", "title": "New Logic for Programmers (and the future of this newsletter)", "url": "https://buttondown.com/hillelwayne/archive/new-logic-for-programmers-and-the-future-of-this/", "published_at": "2026-05-06T17:03:46+00:00" }, { "id": "01a0d928-0e1f-73bb-b446-aa474cb1e663", "title": "Symmetric filters on survey responses", "url": "https://buttondown.com/blog/api-survey-response-filters", "published_at": "2026-05-04T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c73341e9", "title": "What email will look like in the future", "url": "https://buttondown.com/blog/future-of-email", "published_at": "2026-05-01T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd464052e81e", "title": "Illegal vs Unwanted States", "url": "https://buttondown.com/hillelwayne/archive/illegal-vs-unwanted-states/", "published_at": "2026-04-28T15:14:09+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c7cd1103", "title": "Filter subscribers by bounce date and reason", "url": "https://buttondown.com/blog/bounce-filters", "published_at": "2026-04-28T00:00:00+00:00" }, { "id": "01a0d928-0e1f-73bb-b446-aa474e291a6b", "title": "Response bodies are kept only for idempotent requests", "url": "https://buttondown.com/blog/api-response-data-retention", "published_at": "2026-04-22T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd46411f6873", "title": "People get confused when language implementations break language guarantees", "url": "https://buttondown.com/hillelwayne/archive/people-get-confused-when-language-implementations/", "published_at": "2026-04-21T17:40:17+00:00" }, { "id": "01a08cb4-1e09-7359-bc0c-013a5c026b2e", "title": "Delete your accounts", "url": "https://buttondown.com/jonathancrowe/archive/delete-your-accounts/", "published_at": "2026-04-20T23:32:15+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c8955d2e", "title": "Three features are moving behind the paywall", "url": "https://buttondown.com/blog/paywall-changes", "published_at": "2026-04-20T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c8c114d3", "title": "Firewall changes and improvements", "url": "https://buttondown.com/blog/firewall-improvements", "published_at": "2026-04-19T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09c952e231", "title": "Email could have been X.400 times better", "url": "https://buttondown.com/blog/x400-vs-smtp-email", "published_at": "2026-04-17T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd464170db3d", "title": "A sufficiently comprehensive spec is not (necessarily) code", "url": "https://buttondown.com/hillelwayne/archive/a-sufficiently-comprehensive-spec-is-not/", "published_at": "2026-04-15T16:18:02+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09ca395d5b", "title": "Put your name and voice into your company newsletter", "url": "https://buttondown.com/blog/founder-led-company-newsletter", "published_at": "2026-04-10T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09cac10680", "title": "Simplified email address settings", "url": "https://buttondown.com/blog/sending-email-address", "published_at": "2026-04-09T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09cb31832c", "title": "Subscription wall", "url": "https://buttondown.com/blog/subscription-wall", "published_at": "2026-04-09T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09cb6d6ca4", "title": "Inboxes were overwhelming before we'd even named them", "url": "https://buttondown.com/blog/inbox-history-to-today", "published_at": "2026-04-04T00:00:00+00:00" }, { "id": "01a07df2-22c5-70db-9168-3d09cc641fa9", "title": "The US government tried really hard to screw up email", "url": "https://buttondown.com/blog/email-survived-government", "published_at": "2026-04-03T00:00:00+00:00" }, { "id": "01a0875a-d765-735f-9f36-cd4641e3830b", "title": "April Cools Post: New York vs Chicago Pizza", "url": "https://buttondown.com/hillelwayne/archive/april-cools-post-new-york-vs-chicago-pizza/", "published_at": "2026-04-01T17:53:29+00:00" } ] posts Claim your blog

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Buttondown Newsletters

buttondown.com

2026

The joy and agony of a snail mail newsletter original ↗

25 Sept 2026

Email has never been free original ↗

18 Sept 2026

The LLMs yearn for the spines original ↗

16 Sept 2026

Web app and email delays original ↗

16 Sept 2026

Email analytics original ↗

15 Sept 2026

Crawling settings original ↗

12 Sept 2026

Email isn’t decentralized, and that’s fine original ↗

11 Sept 2026

The Great Pruning original ↗

10 Sept 2026

‘The beauty of life is found in all of these subtle imperfections’original ↗

9 Sept 2026

[Link] On artificial intelligence by Matt May original ↗

9 Sept 2026

Itemized event exports original ↗

7 Sept 2026

September 6, 2026 original ↗

6 Sept 2026

Email should be the universal interface for software original ↗

4 Sept 2026

New Post: A Crash Course in Predicate Logic original ↗

1 Sept 2026

Vote on the website of the year original ↗

1 Sept 2026

Dashboard and Archives downtime original ↗

1 Sept 2026

Ask a Nerd: Can you use web fonts in email?original ↗

28 Aug 2026

Newsletters should be the director’s commentary of every creator original ↗

21 Aug 2026

One source of truth for analytics original ↗

19 Aug 2026

Vim wants you to control, VSCode wants you to consume original ↗

18 Aug 2026

Ask a Nerd: Can emails include dark and light mode themes?original ↗

14 Aug 2026

Confirmation emails when re-adding an unsubscribed subscriber original ↗

14 Aug 2026

Segments on the API original ↗

8 Aug 2026

Private email is fine, actually original ↗

7 Aug 2026

Introducing forms original ↗

6 Aug 2026

Clearer collision behavior when recreating subscribers original ↗

6 Aug 2026

What I love about Django original ↗

5 Aug 2026

Introducing segments original ↗

4 Aug 2026

Send your RSS digest on any day of the month original ↗

1 Aug 2026

Filtered blocks original ↗

31 Jul 2026

Email sending & other tasks delayed original ↗

31 Jul 2026

We built our own dig original ↗

30 Jul 2026

Logic for Programmers is Done original ↗

29 Jul 2026

How we localize Buttondown original ↗

29 Jul 2026

Enhanced link cards on Bluesky original ↗

28 Jul 2026

Custom tracking links broken original ↗

27 Jul 2026

Turning our OpenAPI schema into a bug finder original ↗

27 Jul 2026

Mermaid diagram rendering original ↗

25 Jul 2026

Email ads in the 80s were weird and wonderful lies original ↗

24 Jul 2026

Tag gating, and domain verification on the API original ↗

24 Jul 2026

api.buttondown.email inaccessible original ↗

23 Jul 2026

How to back up your emails and newsletters locally original ↗

17 Jul 2026

Intermittent issues logging into the app original ↗

17 Jul 2026

How we increased conversion rate by 42% by making one small change to our pricing page original ↗

16 Jul 2026

I'm still alive original ↗

14 Jul 2026

Ask a nerd: Can I use SVG images in emails?original ↗

10 Jul 2026

Better drilldown into opens and clicks original ↗

7 Jul 2026

Reply to comments via email original ↗

6 Jul 2026

How I send and grow my newsletter without open and click tracking original ↗

3 Jul 2026

An improved way to manage visibility of archived emails original ↗

2 Jul 2026

Google Reader was building the wrong future original ↗

1 Jul 2026

The series of tubes filled with enormous amounts of mail, beneath our feet original ↗

26 Jun 2026

Attach files to your Inbox replies original ↗

25 Jun 2026

Even more tweaks to inbound and replies original ↗

24 Jun 2026

The events API now reads from one event store original ↗

23 Jun 2026

Manually adding subscribers failed original ↗

19 Jun 2026

Lotus Notes and the dangers of starting from scratch original ↗

19 Jun 2026

A one-click link to your latest issue original ↗

18 Jun 2026

Logic for Programmers v0.15, Livecoding original ↗

17 Jun 2026

App downtime original ↗

16 Jun 2026

A two-column archive index for the Modern theme original ↗

16 Jun 2026

Broken images original ↗

12 Jun 2026

Nontrailing separators do not spark joy original ↗

10 Jun 2026

What’s a few hundred becquerels per cubic metre among friends?original ↗

10 Jun 2026

Tiny Awards 2026 are open for nominations!original ↗

8 Jun 2026

Being weirder than AI is practicable and valuable original ↗

8 Jun 2026

Annihilating both time and space: What the telegraph gave email original ↗

5 Jun 2026

Errors that tell you how to fix them original ↗

5 Jun 2026

Surveys in transactional emails original ↗

4 Jun 2026

Tracked links unavailable original ↗

3 Jun 2026

Custom domain tracking links unavailable and delayed analytics original ↗

3 Jun 2026

Notes on your team members original ↗

3 Jun 2026

Logic for Programmers extra credits original ↗

2 Jun 2026

Compulsive curiosity, or, how I built an infinite idea machine original ↗

29 May 2026

Knowing about things is cheaper than knowing things original ↗

28 May 2026

Gift details on the subscriber portal original ↗

28 May 2026

Portal link in the archive nav original ↗

25 May 2026

Assumptions weaken properties original ↗

20 May 2026

First, add no friction: How micropayments lost and subscriptions won original ↗

15 May 2026

Points are a weird and inconsistent unit of measure original ↗

13 May 2026

Filter subscribers and automations by source original ↗

8 May 2026

Automations, rebuilt original ↗

7 May 2026

New Logic for Programmers (and the future of this newsletter)original ↗

6 May 2026

Symmetric filters on survey responses original ↗

4 May 2026

What email will look like in the future original ↗

1 May 2026

Illegal vs Unwanted States original ↗

28 Apr 2026

Filter subscribers by bounce date and reason original ↗

28 Apr 2026

Response bodies are kept only for idempotent requests original ↗

22 Apr 2026

People get confused when language implementations break language guarantees original ↗

21 Apr 2026

Delete your accounts original ↗

20 Apr 2026

Three features are moving behind the paywall original ↗

20 Apr 2026

Firewall changes and improvements original ↗

19 Apr 2026

Email could have been X.400 times better original ↗

17 Apr 2026

A sufficiently comprehensive spec is not (necessarily) code original ↗

15 Apr 2026

Put your name and voice into your company newsletter original ↗

10 Apr 2026

Simplified email address settings original ↗

9 Apr 2026

Subscription wall original ↗

9 Apr 2026

Inboxes were overwhelming before we'd even named them original ↗

4 Apr 2026

The US government tried really hard to screw up email original ↗

3 Apr 2026

April Cools Post: New York vs Chicago Pizza original ↗

1 Apr 2026