One fewer setting to deal with! (Maybe)

Gate your archive content behind a subscription — no paid plan required.

Gather round while an old man yells at cloud (email)

While other projects floundered in red tape, email thrived in it.

Our public postmortem for the incident on March 31st, 2026.

The email feature that got added because people kept marking email newsletters as junk.

Share book recommendations with rich embeds from Bookshop.org

It turns out you’ve been using agents since way before the AI variety started deleting everything in their owners’ inboxes.

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.

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.