Last updated March 16, 2026
This Cookie Policy explains how Buttondown, LLC ("we", "us", or "our") uses cookies and similar technologies when you visit our website at buttondown.com or interact with any newsletter hosted on Buttondown. This policy should be read alongside our Privacy Policy.
What are cookies?
Cookies are small text files placed on your device by a website. They are widely used to make websites work, improve efficiency, and provide information to site owners. We use both session cookies (which expire when you close your browser) and persistent cookies (which remain on your device for a set period).
Cookies we use
Essential cookies
These cookies are necessary for the website to function and cannot be switched off.
| Cookie | Purpose | Duration |
|---|---|---|
| Session | Keeps you logged in to your Buttondown account | Session |
| CSRF token | Protects against cross-site request forgery attacks | Session |
| Spam prevention | Prevents abuse of the subscription process | 1 hour |
Functional cookies
These cookies enable core product functionality for newsletter publishers and their subscribers.
| Cookie | Purpose | Duration |
|---|---|---|
| Account information | Remembers your newsletter and billing context so we can display the correct dashboard experience | 30 days |
| UTM parameters | Preserves marketing attribution data (source, medium, campaign) when a subscriber signs up through a link with UTM parameters | 30 days |
| Initial page | Records the first page a visitor accessed, so publishers can understand where their subscribers came from | 30 days |
Analytics cookies
These cookies help us and newsletter publishers understand how visitors interact with their content.
| Cookie | Purpose | Duration |
|---|---|---|
| Visitor identifier | An anonymous identifier used to track pageviews on newsletter archives, so publishers can see traffic to their content | Persistent |
| Marketing visitor ID | An anonymous identifier used on our marketing site for A/B testing | Persistent |
Cookies on custom domains
If you are a newsletter publisher using a custom domain, the same cookies described above may be set on your domain to support the subscription process and provide analytics. You can disable the analytics cookie (visitor identifier) in your newsletter settings.
Third-party cookies
We do not use third-party advertising cookies. We do not sell your data to advertisers.
Other tracking technologies
In addition to cookies, we use tracking pixels in emails to help publishers measure open rates. This is a standard practice across email service providers and can be disabled by publishers in their newsletter settings.
Managing cookies
Most web browsers allow you to control cookies through their settings. You can typically:
- View what cookies are set
- Delete individual or all cookies
- Block cookies from specific or all sites
- Block third-party cookies
Please note that disabling essential cookies may prevent you from using certain features of our service, such as logging in to your account.
Changes to this policy
We may update this Cookie Policy from time to time. The updated version will be indicated by an updated "Last updated" date at the top of this page.