Data Protection Declaration

Privacy Policy

Last updated: February 2026

1. Controller and Contact Details

The controller responsible for the processing of personal data on this website is:

Klein-Keyser & Partners
Daniel Klein-Keyser
Langstr. 31
63526 Erlensee, Germany
Email: info@kleinkeyser.com
Phone: +49 163 7597597

2. Scope and Purpose of Data Processing

We process personal data exclusively for the purposes stated below and only to the extent necessary.

Contact Form: When you use our contact form, we collect the following data:

  • First name and last name
  • Email address
  • Company name
  • Role/position
  • Phone number (optional)
  • Message content
  • Selected business situation categories

This data is processed solely to respond to your inquiry and establish potential business communication.

Appointment Booking: When you schedule an appointment through our website, we process:

  • First name and last name
  • Email address
  • Appointment date and time
  • Purpose of the appointment (if provided)

This data is processed to facilitate appointment scheduling and communication regarding the scheduled meeting.

3. Legal Basis for Processing

The processing of your personal data is based on:

  • Art. 6(1)(a) GDPR – Your explicit consent, which you provide by checking the consent checkbox when submitting the contact form.
  • Art. 6(1)(b) GDPR – Processing necessary for pre-contractual measures taken at your request, such as providing information about our consulting services.

You may withdraw your consent at any time by contacting us at info@kleinkeyser.com. Withdrawal does not affect the lawfulness of processing based on consent before its withdrawal.

4. Recipients and Processors

Your personal data may be shared with the following categories of recipients:

  • Hosting Provider (Vercel): Our website is hosted on Vercel Inc., which processes data on our behalf as a data processor.
  • Database Provider: Contact form submissions are stored in our database hosted by our database provider.
  • Email Service Provider (Resend): Notifications about contact form submissions are delivered via Resend Inc.
  • Google LLC: We use Google Calendar for appointment scheduling. When you book an appointment, your data is processed by Google LLC as a processor.

All processors are contractually bound to comply with GDPR requirements and process data only according to our instructions.

5. International Data Transfers

Some of our service providers are located outside the European Economic Area (EEA) or process data in countries outside the EEA. We rely on:

  • The EU-U.S. Data Privacy Framework adequacy decision adopted by the European Commission, and/or
  • EU Standard Contractual Clauses as approved by the European Commission

These safeguards ensure that your data receives an adequate level of protection equivalent to that provided within the EEA.

6. Data Retention

We retain your contact form data only as long as necessary:

  • If no business relationship is established: Data is deleted after 6 months or upon your request.
  • If a business relationship is established: Data is retained for the duration of the relationship and subsequently according to legal retention obligations (typically 6-10 years for commercial and tax records).

7. Your Rights Under GDPR

You have the following rights regarding your personal data:

  • Right of access (Art. 15 GDPR)
  • Right to rectification (Art. 16 GDPR)
  • Right to erasure (Art. 17 GDPR)
  • Right to restriction (Art. 18 GDPR)
  • Right to data portability (Art. 20 GDPR)
  • Right to object (Art. 21 GDPR)
  • Right to withdraw consent (Art. 7(3) GDPR)

To exercise these rights, please contact us at info@kleinkeyser.com.

8. Right to Lodge a Complaint

If you believe our processing of your personal data violates GDPR, you have the right to lodge a complaint with a supervisory authority.

The competent supervisory authority is:
Der Hessische Beauftragte für Datenschutz und Informationsfreiheit
Postfach 3163
65021 Wiesbaden, Germany
Website: datenschutz.hessen.de

9. Use of Google Calendar

We use Google Calendar (Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA) for appointment scheduling.

Data Processed: Name, email address, appointment date and time, appointment purpose (if provided).

Legal Basis: Art. 6(1)(a) GDPR (consent) and Art. 6(1)(b) GDPR (pre-contractual measures).

Google's privacy policy: https://policies.google.com/privacy

10. Cookies and Tracking

We do not use tracking, analytics, or marketing cookies on this website.

This website uses only technically necessary cookies that are essential for basic functionality (such as maintaining your language preferences in localStorage).

We do not employ third-party analytics tools, advertising cookies, social media tracking pixels, or any technology that tracks your behavior across websites.

11. Security

We implement appropriate technical and organizational measures to protect your personal data against unauthorized access, loss, or alteration. This includes HTTPS/TLS encryption for all data transmission, secure hosting infrastructure, access controls, and regular security assessments.

12. Changes to This Privacy Policy

We may update this privacy policy from time to time to reflect changes in our practices or legal requirements. The "Last updated" date at the top of this page indicates when changes were last made.

Questions About Privacy?

If you have questions, please contact us at:

info@kleinkeyser.com