Skip the password entirely and sign in with just your passkey.

"First name" and "first_name", together at last

Updated DPA, privacy policy, sub-processor list, and cookie policy.

Honestly, it’s more conceptually complicated than technically complex.

Use your fingerprint, face, or security key as a second factor when signing in.

A deep dive into our date-based API versioning system, inspired by Stripe, and how it lets us ship breaking changes without breaking your integrations.

The first email was sent from space three days after the first webpage was published.

A new API version that defaults to draft instead of sending, with a one-time confirmation header for immediate sends.

Invisibly making your newsletter safer

If you lose your authenticator device, recovery codes let you get back into your account.

Quickly find your best (and worst) performing emails by filtering on open rate, click rate, and delivery rate.

Making every ID in our API self-describing, one endpoint at a time

The machinery behind Buttondown's link checker is more involved than you might expect.

Mailing lists died out to make way for newsletters. But there are a lot of reasons to bring back group discussions over email.

Your newsletter's metadata is now available in email templates, giving you global variables you can reference across every email you send.

Every automation action carries its own timing as of API version 2026-04-01

Find your most (and least) engaged subscribers by sorting and filtering by open and click rates.

Your click tracking links now use your own sending domain instead of a shared proxy.

The /v1/newsletters endpoint now exposes locale, templates, socials, transactional emails, and more.

Reply tracking is now automatic for sending domains, and always on for everyone.

Full HTML control over your email design is now available to all Professional plan users.

No more choosing between "pause" and "cancel" — there's just one option now.

You’d have to send fairly lengthy newsletters to run into issues. And even then, only a subset of subscribers would suffer.

A day-by-day log of everything we ship, in plain English

Swedish localization

It’s rare for a good email to start with Fwd: Fw: fwd:

Add context to subscriber-editable tags with a new API field.

A machine-readable spec for the data powering your archive pages.

Journalist, Rodrigo Ghedin, uses his bilingual newsletter to share his insights on the social and psychological impacts of modern consumer technology.

Musician and tech professional, Brandon Lucas Green, uses his newsletter as an outlet to share his music journey and provide insights on how fellow creators can achieve creative independence.