Sign-up for the Holon Puzzle email Newsletter
You are signing up for the shared Holon Puzzle email Newsletter.
Sign-up source: Holon Puzzle
We will assign information about the website from which the sign-up took place — for example Holon Puzzle, Element Guru or F.L.O.W. — to your email address. We will use it to assign you to the appropriate segment and to select newsletter content. As a result, messages may first present news relating to the project from which the sign-up took place, and then also information from the other projects of the Holon Puzzle ecosystem.
What will you receive?
The newsletter may contain information about the development of Holon Puzzle and its projects, new applications and features, publications, materials, deployments, events and other significant changes, as well as marketing content concerning Holon Puzzle and its projects.
The data controller is Tomasz Karczewski – Holon Puzzle, Block C-15, Südstraße 31, 47475 Kamp-Lintfort, Deutschland.
Providing an email address and signing up for the email version are entirely voluntary.
Measurement of newsletter use
The email version of the Holon Puzzle Newsletter includes individual measurement of the use of this channel. In operating the newsletter we may receive information about whether and how many times a given message was opened, whether links contained in it were clicked, and aggregated information about the type of device and operating system used to open messages.
We use this data to assess whether the newsletter is actually used by recipients, to manage list activity, to limit or end sending to inactive recipients, to assess interest in particular topics, and to improve the form and presentation of subsequent messages — for example their layout, length, structure or adaptation to the devices most often used by recipients.
The email version is offered as one voluntary communication channel covering both the delivery of messages and the measurement of use of this channel described above. If you do not want such measurement, do not sign up for the email version.
This does not limit access to public news. You can read news relating to the project from which the sign-up took place without the email version at /en/newsletter/, and news from the entire Holon Puzzle ecosystem is available in the combined newsletter at https://holonpuzzle.com/newsletter/. Using those pages does not require signing up for the Holon Puzzle email Newsletter or newsletter open/click measurement.
Hostinger Reach and confirmation of sign-up
We use the Hostinger Reach service to operate the recipient list, segmentation, sending of messages, measurement of newsletter use and handling of unsubscribes.
After you submit the form you will receive a message asking you to confirm your email address. The subscription will be activated only after you click the link or button confirming the sign-up in that message (Double Opt-In).
Your consent
By signing up I declare that I want to receive the Holon Puzzle email Newsletter and I consent to the sending, to the email address provided, of information, news, materials and marketing content concerning Holon Puzzle and its projects, and to the individual measurement of opens and clicks described above and the analysis of aggregated statistics concerning types of devices and operating systems, for the purpose of managing list activity, assessing the use of this channel and improving the form and presentation of subsequent messages.
You may withdraw your consent at any time with effect for the future, in particular by using the unsubscribe link available in every message or by contacting us at newsletter@holonpuzzle.com. Withdrawal of consent ends the email subscription and further measurement of newsletter use. It does not affect the lawfulness of processing carried out before the withdrawal of consent.
Detailed information about the processing of data, recipients, data transfers, retention periods and your rights can be found in the Privacy Policy.
Consent version: v1 · effective from: 2026-09-18
