LAST UPDATED 27 SEPTEMBER 2026

Privacy & your email

Who runs this newsletter

This newsletter is published by #TrueNest s.r.o., IČO 24070149, Rybná 716/24, Staré Město, 110 00 Praha 1, Czechia. Registered in the Commercial Register kept by the Municipal Court in Prague, section C, insert 438220. This company is responsible for the personal data used to run the newsletter. Contact us at bub@dailyfactmail.com.

What you are signing up for

One short science email each day, which may include occasional updates about our future learning app. Signing up is optional. We use your email address and your subscription and confirmation records to send these emails with your consent. We ask you to confirm your address before starting the daily emails. This does not sign you up to our other channel newsletters. This newsletter is for readers aged 16 and over. If we learn that a subscriber is younger, we will stop their subscription and delete personal data that we no longer need. We may retain a limited record where necessary to prevent further emails or meet a legal obligation, as explained below.

Information we use

Our signup form asks for your email address. Our email provider also processes technical information such as IP address, browser information, signup time and source, confirmation status, delivery failures and unsubscribe requests. If you reply, we receive your message and the contact details you include. Open tracking and click tracking are disabled for our welcome email and daily newsletters. We do not use opens or clicks to decide whether to unsubscribe you. Confirmation and unsubscribe links identify your subscription so we can carry out your request.

We use subscription records to deliver the requested emails. We use necessary technical and delivery records to keep the service secure and working, prevent abuse, and honour your preferences, based on our legitimate interests in operating the newsletter. We do not sell our subscriber list or use it to make decisions with legal or similarly significant effects on you.

Service providers

We use EmailOctopus, operated by Three Hearts Digital Ltd in the United Kingdom, to manage subscriptions, confirmation and unsubscribe requests, and deliver emails. EmailOctopus states that its application, subscriber data and email sending servers are hosted in the EU. The European Commission recognises the United Kingdom as providing an adequate level of data protection under its UK adequacy decision, renewed on 19 December 2025 and due to expire on 27 December 2031 unless extended. It and its service providers process personal data on our behalf under its data-processing terms. Contact us for information about the providers and transfer safeguards applicable to your data.

Porkbun provides our domain and forwards messages sent to bub@dailyfactmail.com to our ordinary consumer Gmail inbox. Porkbun and Google therefore process the sender’s address, message content, attachments and technical delivery information when you contact us. We use this correspondence to answer questions and handle subscription or privacy requests, based on our legitimate interests in responding to you and, where applicable, our legal obligations. Contacting us does not subscribe you to the newsletter.

Google provides this inbox under its consumer terms, rather than a Google Workspace business data-processing agreement. Google describes its handling of Gmail data in its Privacy Policy. Information may be processed outside the EEA, including in the United States. Google describes its use of adequacy decisions, the EU–U.S. Data Privacy Framework and standard contractual clauses in its data-transfer information. Porkbun’s handling of information is described in its Privacy Policy. Contact us for information about the safeguards applicable to your correspondence.

Website cookies and technical information

This website is hosted through OpenAI Sites and delivered through Cloudflare. They process technical information, including your IP address and browser information, to deliver and protect the page. Sites automatically records traffic and provides visitor and page-view statistics. We use this hosting, security and aggregate visitor-statistics processing to operate, protect and understand use of this website, based on our legitimate interests. Cloudflare uses a security cookie called __cf_bm to help distinguish automated traffic from legitimate visitors. It expires after 30 minutes of inactivity. Cloudflare also performs browser security checks. These measures help protect the website; they are separate from newsletter open and click tracking. See Cloudflare’s cookie information. Hosting processing is covered by the applicable OpenAI Sites data-processing agreement. For EEA data transferred outside the EEA, that agreement provides for European Commission adequacy decisions or standard contractual clauses. You can contact us for information about these safeguards. We do not add advertising pixels. Our signup form loads from EmailOctopus; when you submit it, your email address goes directly to EmailOctopus, which handles signup and email confirmation.

The EmailOctopus signup form loads automatically when you open the newsletter page. EmailOctopus receives the technical information needed to provide the form, such as your IP address and browser information. Your email address is submitted when you choose “Send me the facts”. Google reCAPTCHA is disabled, and the page blocks external font stylesheets and font downloads, including Google Fonts. The form uses fonts available on your device. A hidden spam-trap field helps reduce automated signups, and we ask you to confirm your email address before sending newsletters. You can manage existing cookies through your browser settings.

How long we keep it

We keep your subscription record while you subscribe. Unsubscribing stops future newsletter delivery; it does not automatically erase all records. We retain the limited suppression and consent records needed to respect your opt-out and address complaints or legal obligations. For suppression records, the relevant period is how long we operate the newsletter and need to prevent an unwanted resubscription. Consent evidence is retained while it is needed to demonstrate a valid signup or resolve a complaint. Correspondence is retained while a request or dispute remains open and while needed for any applicable legal obligation. We assess whether continued retention is necessary when handling an erasure request. You can ask us to erase your information or explain the retention that applies to it.

Your choices and rights

Use the unsubscribe link in any newsletter, or email us, to withdraw consent at any time. This does not affect processing that was lawful before withdrawal. You can also ask for access, correction, erasure, restriction or a portable copy of your data, and object to processing based on legitimate interests. These rights apply subject to the conditions in data protection law. We normally respond to a data-rights request within one month. If a lawful extension is necessary, we will explain it within that first month. We may need proportionate information to verify that a request concerns your data.

You may complain to the Czech Office for Personal Data Protection (ÚOOÚ) or your local supervisory authority. Contact bub@dailyfactmail.com for privacy requests or questions.