Privacy policy

Who we are

Interest Digest is operated by 9523 Labs LLC, 2810 N Church St, PMB 267171, Wilmington, Delaware 19802-4447. Questions about this policy go to Contact.

What we collect

• When you subscribe: your email address and the newsletters you chose. You confirm by clicking a link we email you; nothing else is sent until you do.
• A consent record for each subscription: when you signed up and confirmed, which newsletters, the version of the signup wording you agreed to, the page you signed up on and, if you arrived from a link with campaign tags (such as utm_source), those tags.
• Delivery records from our email provider: whether an email was delivered, bounced or marked as spam, so we stop sending to addresses that can't or don't want to receive it, and whether it was opened or a link in it was clicked, which we count per issue to see what readers find useful.

We never put your email address in a web address, in analytics or in logs, and we don't store it in your browser. The one exception is advertising measurement with Meta, described below, which receives your address only in hashed form. The links in our emails that confirm, manage or end a subscription contain a private code; we keep those codes out of analytics and logs and never share them.

How we use it

• To send the newsletters you subscribed to and the emails that manage your subscription.
• To understand, in aggregate, which pages and campaigns bring readers.

We don't sell or rent your email address. Apart from the hashed form we share with Meta for advertising measurement (below), we don't share it with advertisers.

Who processes it for us

• Cloudflare hosts the website and stores our data. Cloudflare Turnstile checks that forms are sent by people rather than bots, and form submissions are rate-limited, which means processing your IP address.
• Cloudflare Web Analytics counts page views without cookies and without identifying you.
• Google Analytics 4 measures visits to public pages. We run it with Google Signals and ad personalization turned off and with the shortest data retention it offers, and we don't load it at all when your browser sends a Global Privacy Control signal. It isn't loaded on the pages that manage your subscription. Google Analytics sets its own cookies.
• Resend sends our emails and tells us whether they were delivered, opened or clicked.
• Meta (Facebook and Instagram) measures our ads, as described under Advertising measurement.

Advertising measurement

We advertise our newsletters on Facebook and Instagram. To learn which ads lead to signups, public pages of this site use the Meta Pixel and our servers use Meta's Conversions API. Third parties, including Meta, may use pixels, web beacons, cookies and other storage technologies to collect or receive information from this site and elsewhere on the internet, and use that information to provide measurement services and to target and deliver ads.

• What is shared with Meta: the public pages you visit here; that you signed up and, later, that you confirmed; your IP address and your browser's user agent; Meta's browser identifiers (the _fbp and _fbc cookies the Meta Pixel sets, and the fbclid code a link from a Meta ad adds); and, when you sign up, your email address in hashed form: a one-way SHA-256 code computed from it, never the address itself.
• The Meta Pixel is never loaded on the pages that confirm, manage or end a subscription, and we don't use Meta's automatic form matching.
• Meta uses this information under its own terms and privacy policy, and may keep it for up to two years.

How to opt out: if your browser sends a Global Privacy Control signal, we don't load the Meta Pixel and we send Meta nothing about your signup, at the time or when you confirm. You can also opt out of the collection and use of information for ad targeting through the Digital Advertising Alliance at aboutads.info/choices, in Europe at youronlinechoices.eu, and in your Meta ad preferences.

How long we keep it

• Confirmation and preference links are deleted 30 days after they expire. A signup that is never confirmed gets no further email unless you sign up again; we keep its record of what was asked for, and you can have it deleted through Contact.
• Consent records are kept for as long as the subscription lasts and for three years after it ends, so we can show what you agreed to.
• For advertising measurement we keep the hashed address, IP address, user agent and Meta browser identifiers from a signup only until it is confirmed or its confirmation link expires, after seven days, whichever comes first.
• If you unsubscribe or an address bounces, we keep the address on a suppression list so we never email it again by mistake. Signing up again with a new confirmation lifts it.

Your choices

• Every email has a link to unsubscribe from that newsletter in one click, and a link to your preferences, where you can change newsletters or unsubscribe from all of them.
• To ask what we hold about you or to have it deleted, see Contact.

Children

Interest Digest is not meant for children under 13, and we don't knowingly collect their information.

Changes

If this policy changes, we'll update this page before the change takes effect.