The protection of your personal data and compliance with applicable national and European data protection regulations, in particular the EU General Data Protection Regulation ("GDPR") and the Rhineland-Palatinate State Data Protection Act ("LDSG"), is an important concern for the state capital of Mainz. The following information explains how the state capital of Mainz handles personal data on the Mastadon account.

Normally, you can access the Mastadon account without providing any personal information. In individual cases, however, we may need personal data from you, for example, if you communicate with us via Mastadon. If you provide us with information about third parties, such as spouses or relatives, we assume that you have obtained the appropriate consent beforehand.

You can access the comprehensive privacy policy of the state capital of Mainz at the following link: 

Additional information on our information obligations under Article 13 of the GDPR can be found at the following link:

The responsible authority is:

State Capital Mainz
City Hall Große Bleiche, Große Bleiche 46/Löwenhofstraße 1, 55116 Mainz
Phone: 06131 115
Email: oberbuergermeisterstadt.mainzde

You can contact the data protection officers of the State Capital Mainz here:

Mastodon is an open, decentralized, non-commercial, and privacy-friendly social media platform. You can find more information here:

The state capital of Mainz uses the instance mastadon.social, whose privacy policy can be found here: 

Please note that you use the Mastadon account and its functions at your own risk. This applies in particular to the use of interactive functions (e.g., commenting, sharing, rating). Alternatively, you can also access all the information offered on this page on our website at www.mainz.de. We would also like to point out that even if messages to followers or specific users are only displayed to them, the administrators of the instance and the server can still access such toots, and that the recipients may also publish these toots themselves without restriction.

In addition to the information you provide when registering and creating your profile, as well as your own toots, the list of accounts you follow, and the accounts that follow you, the Mastadon instance also processes your IP address, information about your operating system, your internet browser, and the time of access. This information is stored in logs and may be retained for up to 90 days, with the IP address used being retained for up to 12 months.

This data is used by the Mastadon instance to provide the service, to enable moderation (e.g., to exclude banned IP addresses after violations), and to send you information about your account or responses to inquiries via the email address you provided during registration. User data is not analyzed and is not made available to the state capital of Mainz by the instance.

The Mastadon instance also uses cookies to recognize users and the settings they have made and to directly implement the default settings made during future visits.

In addition, we may process your personal data to respond to tweets and/or direct messages. For this purpose, we use the social media management tool "SocialHub."

As Twitter Inc. is a non-European provider, it is not bound by German data protection regulations. This affects, for example, your rights to information, blocking or deletion of data, or the possibility of objecting to the use of usage data for advertising purposes.

You can restrict the processing of your data in the general settings of your Twitter account and under "Privacy and security." In addition, on mobile devices (smartphones, tablet computers), you can restrict Twitter's access to contact and calendar data, photos, location data, etc. in the settings options there. However, this depends on the operating system used. Further information on these points is available on the following Twitter support pages:

The state capital of Mainz operates the Mastadon account in order to provide its citizens and other interested parties with additional information about its work and the state capital of Mainz as such. The presence thus serves to fulfill a public function of the state capital of Mainz, namely the fulfillment of its information obligations.

Personal data that you voluntarily send to the state capital of Mainz via the Mastadon account is collected and processed by the state capital of Mainz on the basis of your consent in accordance with Art. 6 (1) (a) GDPR. Consent pursuant to Art. 6 (1) (a) GDPR may be revoked at any time with effect for the future. This also applies to declarations of consent already given before the GDPR came into force.

The state capital of Mainz processes and uses personal data in its services in accordance with the provisions of data protection regulations.

Insofar as personal data is collected, processed, and used within the scope of specialist applications of municipal offices and companies, the respective special legal regulations (e.g., Rhineland-Palatinate Registration Act, Social Security Code, Foreigners Act) and/or the LDSG apply.

The state capital of Mainz processes and uses your personal data outside of its services only to the extent that this is necessary or legally required for the fulfillment of tasks falling within the jurisdiction of the state capital, or if you have given your consent. The relevant legal bases are Art. 6 (1) (c), (e) GDPR, § 3 LDSG and Art. 6 (1) (a) GDPR. The state capital of Mainz does not pass on the data to non-public bodies.

Within the state capital of Mainz, your data will be shared with those entities that require it to fulfill our contractual and legal obligations. As a matter of principle, we do not pass on data to non-public entities. However, some data is passed on under strict contractual and legal conditions:

External service providers:

If service providers come into contact with your data, this is usually done within the framework of what is known as commissioned processing of personal data. This is expressly provided for by law. In this case, the state capital of Mainz remains responsible for the protection of your data, alongside the processor where applicable. The service provider works exclusively in accordance with our instructions, which we ensure through strict contractual regulations, technical and organizational measures, and supplementary controls.

The state capital of Mainz uses service providers as processors. These are service providers in the categories of IT services (e.g., for technical and administrative tasks and for usage analysis), telecommunications, consulting, and sales and marketing.

The data protection requirements for the processing of personal data in accordance with instructions are complied with.

Insofar as the state capital of Mainz processes your personal data, you are entitled to a number of data protection rights, in particular a

• right to information (Art. 15 GDPR),
• right to rectification (Art. 16 GDPR),
• right to erasure (Art. 17 GDPR),
• right to restriction of processing (Art. 18 GDPR),
• right to data portability (Art. 20 GDPR),
• Right to lodge a complaint with a supervisory authority (Art. 77 GDPR).

The data protection officers of the state capital of Mainz and the State Commissioner for Data Protection and Freedom of Information of Rhineland-Palatinate are available to you as contact persons.

The current version of this privacy policy can be found at the following link:

If you have any questions about the information we provide, please contact us at

Social Media Editorial Office
Stadthaus Große Bleiche
Große Bleiche 46/Löwenhofstraße 1
55116 Mainz
Email: socialmediastadt.mainzde

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