Privacy and cookies

Privacy Policy

Ernst Klett Sprachen GmbH (hereinafter referred to as: publisher) takes the issue of personal data protection very seriously. It is important to us that you feel secure at all times regarding the protection of your personal data and that you are aware of how we use the data, in accordance with data protection law.

1. Purpose

The purpose of this statement is to inform you about the processing of personal data (hereafter referred to as: data) by the publisher in the event of the customer making use of the website

2. Data controller name and address

Ernst Klett Sprachen GmbH
Rotebühlstr. 77
70178 Stuttgart
tel: 0711 / 6672-1555

further information is also available at

3. Contact details of the data protection administrator

Mr. Michael Mayer
Wagnerstr. 12
73765 Neuhausen
tel. +49 (7158) 5294

4. Processing of personal data

The use of your data is strictly subject to current applicable law, in particular the Datenschutzgrundverordnung (German Federal Data Protection Act) (hereafter referred to as: DSGVO).

Disclosure of data to third parties

We will also transmit data, or parts of it, to the following entities and other recipients for the following purposes:


Wirth & Horn Informationssysteme GmbH
Orleansstr. 4a
81669 München


technical service provider for the website, creation of a log file to display the website and to ensure system security

BDL GmbH & Co. KG
Bahnstr. 1
65366 Geisenheim


Technical operation of the database with user data on our behalf, ID Management
Ernst Klett AG

This company provides uniform legal advice for the purpose of collaborative work within the Klett Group. The legal basis for this is Article 6, Paragraph 1f of the GDPR. In a joint responsibility agreement based on Article 26 of the GDPR we have established who fulfills which data protection obligations. The essential content of this agreement is available on request.


Dymatrix Consulting Group
GmbH, Lautenschlagerstr. 2, D-70173 Stuttgart


Responsible for the technical operation of our customer database.

Mapp Digital Germany GmbH
c/o Webtrekk GmbH
Robert-Koch-Platz 4
10115 Berlin    


Web analytics and statistical service

Netigate Deutschland GmbH
Untermainkai 27-28
60329 Frankfurt am Main 


Survey creation tool
Inxmail GmbH
Wentzingerstr. 17
D-79106 Freiburg
Provision of a tool for the creation of newsletters, e-mailings and newsletter subscription forms.


4.1 Registration on the deltapublishing portal

The reasons and legal basis for processing personal data
If you wish to have access to all areas of the portal, you can set up a customer account for future access (registration). This registration entitles you to free access to all bonus features on our portal. In this case, your customer data will be stored  on our portal, so that you do not have to enter your details every time. In order to set up an account, you need to enter your title, first name, last name, email, country, type of school, a user name and password (login details) so that you can log in to your account.

In addition to this, we are also permitted to process the data voluntarily disclosed by you during the registration process in accordance with Article 6, Paragraph 1a) and possibly also f) of the DSGVO, provided that you have consented to this. This concerns data such as telephone and fax number, date of birth, and subject combinations. We process these optional details for internal market research purposes. This is in accordance with Article 6, Paragraph 1a) and, where appropriate, f) of the DSGVO. Finding out the reasons for your order is important to us in the interest of market research.

Is data passed on?
In order to create a user account, data is passed on to the respective service providers (see 4 Processing of personal data).


Do I have to provide my data?
You are neither legally nor contractually required to provide your data. However, in order to have free access to all the bonus features on our portal, you have to at least provide your title, first name, last name, email, country and type of school.

When at the latest will my data be deleted?
If it is necessary to store the data in order to comply with legal obligations according to Article 6, Paragraph 1c) of the DSGVO in accordance with German Commercial Code or fiscal law, we are authorized to store the data until the expiry of the relevant statutory period. The data provided by you during registration will either be deleted at your request or at the latest after 5 years after your last login, provided we are not authorized to store the data for a longer time due to the aforementioned reasons.

4.2 Advertising

We also use your data to send you advertising and email advertising for our products, provided that you have logged into your account in the last 3 years, you have provided us with your postal address/email address and have not objected to receiving such advertising (see 5.4 for your right to object). The processing of data occurs on the basis of Article 6, Paragraph 1f) of the DSGVO. We have a legitimate economic interest in sending our existing customers advertisements by post and email.

Furthermore, we also make use of customer data voluntarily provided by you (for example subject combination and type of school) and other data legally stored by us (for example order and contact history) in the Klett Lernen and Information Group (see list of associated companies) corporate customer database, so that other specialist publishers within the Klett Lernen and Information Group can also send you useful information and offers specific to your subject by post. In order to customize these mailings to your specific needs, the specialist publisher, to whom we pass on your postal address, carries out a limited selection beforehand based on all your customer data saved by all the specialist publishers.

The legal basis for the handling of this data is Article 6, Paragraph 1f) of the DSGVO, which allows the processing of personal data within the “legitimate interest” of the responsible or third party, as long as fundamental rights and freedoms of the individual are not violated. Our legitimate interests and those of the other specialist publishing departments are direct mail and customer retention, achieved through individually customized mailings.

If you no longer wish to receive such mailings from other specialist publishers within the Klett Lernen and Information Group in the future you can at any time, in accordance with Article 21, Paragraph 2 of the DSGVO, revoke your consent for the data to be used for advertising purposes. Please send your withdrawal of consent to

The companies within the Klett Lernen and Information Group have an agreement concerning the joint corporate customer database. In this agreement it states which parts of the company are responsible for complying with which data protection obligations. On request, we can make the main content of this agreement available to you.

Your customer data will be stored in the joint corporate customer database of the Klett Lernen and Information Group only for as long as is necessary for advertising purposes. Any postal addresses and corresponding selected data transmitted to the specialist publishers within the Klett Lernen and Information Group will be deleted after three months at the latest.

Tracking of personal data and tracking partners

By using tracking mechanisms we aim to make the offers and services on our website as personal and individual as possible. In order to make you aware of relevant products, we collect data about your browsing habits when you log on to our website. This also enables us to send you individual advertising, specific to your needs, by email. Both we and our tracking partners BDL GmbH and Inxmail GmbH can identify what you have clicked on in our mailings and on our website.

You can withdraw your consent to the processing of personal data for tracking purposes at any time, by clicking on the tracking deactivation link at the end of the email. Alternatively, please contact customer services

4.3 Making contact

In the case of you contacting us by email, letter, telephone, fax or on social network platforms to ask for information about your order, it may be necessary for you to give us data such as your name, address, year of birth, order or invoice number so that we can process your enquiry. This data will only be used to check your identity and process your enquiry. This is in accordance with Article 6, Paragraph 1 S. 1b) of the DSGVO.

4.4 Newsletter

If you have subscribed to our newsletter we will process your email address in order to be able to send you the newsletter on a regular basis. In addition to this it is necessary, when subscribing to the newsletter, that you name at least one area of interest about which you wished to be informed. After subscribing to the newsletter you will receive a confirmation email from us with a link to verify your email address. When you open one of our newsletters and click on a link, this information will be transmitted to us anonymously, therefore without any reference to your personal data, for statistical purposes.

The legal basis for the sending of the newsletter is your consent, which you gave when subscribing to the newsletter (Article 6, Paragraph 1a) of the DSGVO). You are not obligated to disclose this data. However, an email address must be provided in order to send out a newsletter. The disclosure of your name, title and your place of residence is optional and allows us to address you in a personal manner and let you know about events taking place near to where you live. The data that you disclose to us at the time of subscribing to the newsletter will be deleted as soon as you unsubscribe. You can unsubscribe from the newsletter at any time by clicking on the link to unsubscribe, which can be found at the bottom of the newsletter (to withdraw your consent see 5.5). If you unsubscribe to the newsletter you will still continue to receive promotional emails, in accordance with 4.2.

We also transmit data to our external processor Inxmail GmbH for the purposes mentioned above.

4.5 Visitors to the website

4.5.1 Generation of log files

If you visit this website, the

(1) IP address of your computer or mobile device,

(2) date and time of your visit,

(3) name of the files downloaded and the volume of data transmitted,

(4) type and operating system of the web browser used, including language setting, as well as

(5) the website which redirected you to our website (Referrer-URL),

(6) the websites downloaded from the user’s system via our website

will be stored in log files for 7 days and deleted afterwards. The saving of this data is necessary - in our legitimate interest according to Art. 6 para. 1 lit. f) DSGVO - for technical reasons in order to display the website on your device and to ensure system security. This data will not be disclosed to third parties.

We have a legitimate interest in ensuring that our website is displayed on your device correctly, in being able to quickly detect and eliminate the causes of errors and hacker. The provision of this data is neither legally nor contractually required; however, the use of the website without the processing of much of this data is not possible for technical reasons. Since tracking tools are used on our website, 4.5.3 also applies.

4.5.2 Cookies

Both session cookies and permanent cookies are used at various points on our website. Cookies are small text files containing an identification number allocated by us. Cookies are saved on your computer or mobile device when you access our website. Should you access our website again at a later time, the identification number allows us to recognize your computer or mobile device.

Session cookies facilitate the navigation of our website. They allow items that you have added to your cart to be saved there and, as a registered customer, they allow you to stay logged in even if you access different websites. The setting of session cookies is permitted in accordance with Article 6, Paragraph 1f) of the DSGVO. Session cookies are deleted once the browser is closed.

Permanent cookies help us to customize the design and content of our website to your expectations by documenting your browsing history. This data is saved in a pseudonymous form and separately from your other data. We use permanent cookies for the purpose of analysis in accordance with § 25 TTDSG only with your consent. They are saved for up to 24 months and then deleted.

As well as so-called ‟First Party Cookies”, which are set by us as the data controller, we also use ‟Third Party Cookies”, which are offered by other providers. With regards to the use of cookies on Facebook, Google and YouTube (so-called Third Party Cookies), which provide us with services such as web tracking and measurement tools, you can find more information on the current data protection stipulations on the relevant platforms themselves.

On our website, we distinguish between the following cookie categories:

Essential: These cookies are essential to guarantee a basic operation of the website, e.g. the login form or the cookie settings.

Statistics: Based on the website content accessed, these cookies help us determine how attractive this content is for you. This way we can optimise this website. Only anonymised data is collected.

Marketing: These cookies help us determine which products and services of our comprehensive program best suit your needs. This way we can offer you more relevant information and services.

This table provides an exact overview of the cookies (first and third-party providers) used on our website.

Cookie name Category Type Source Expiry Purpose
cftoken Essential HTTP 20 days This cookie is used to identify what kind of device the visitor is using so that the website can be correctly formatted. This information is saved in the ‟CFID” cookie.
cfid Essential HTTP 20 days This cookie is used in connection with the ‟Cftoken” cookie. The cookie saves a specific ID for the visitor as well as the device and the browser.
whCookieManager Essential HTTP 1 year Used to save the user’s cookie preferences.




browser session

Used to show customers their login status.




browser session

Used to show customers their login status.




browser session

Used to show customers their login status.



HTTP browser session

Used to show customers their login status..



HTTP 5 minutes

Used to show customers their login status.



HTTP 5 minutes

Used to show customers their login status.

wteid_709031981525642 Statistics HTTP 6 month Contains unique end device visitor ID to obtain website usage data.
wtsid_709031981525642 Statistics HTTP browser session Contains the current track ID; if information is not available, a new session is initiated.
wt_rla Statistics Script browser session Number of queries that can still be sent. Used to limit the number of requests and prevent bot attacks.
wt_nbg_Q3 Statistics HTTP browser session Used always to send a user’s requests to the same tracking server and avoid timing issues.
Statistics HTTP browser session mediacodecookie: ensures that measuring is done only once within a campaign session, says if the campaign was clicked or just viewed.
wt_pli_view Statistics Script browser session Used to measure product ID and product list position, thereby enabling optimisation of the composition of products on category pages.
wt_r Statistics Script 5 minutes Enables loading of the tag integration (TI) container scripts from the cache, reducing data traffic.
wt_tc, wt_tcc, wt_ttv2_s, wt_ttv2_c, wt_ttv2_e Statistics Script browser session Used to contain teaser tracking information, such as teasers clicked, and the number of teasers displayed during a session.
miCookieOptOut Statistics Script 400 days Used to flag users to be measured regularly (with user cookie).


Access to your cookie settings

You can choose your preferred cookie settings on our website. You have the possibility at any time to change the cookie settings or to give or revoke consent at a later date. Click here to access cookie settings.

4.5.3 Website tracking


Mapp Digital c/o Webtrekk GmbH 
Our website uses services from Mapp Digital c/o Webtrekk GmbH for web analytics and statistical purposes. Mapp Digital c/o Webtrekk GmbH is a company based in Germany, Robert-Koch-Platz 4, 10115 Berlin, that collects, stores and analyses usage data. It has been certified for data protection in the area of web controlling in Germany in accordance with leading standards ISO 27001 and ISO 27018 following an audit of the data protection compliance and data security of its data processing operations.


Description and scope of data processing
To improve and further develop our website, we analyze statistical characteristics about the use of our offers and services. During your visit, anonymized data without personal reference is transmitted by your browser for internal purposes only, in the course of website optimization. Your browser transfers some information to us when you use our website. This enables the usage data to be stored (exclusively on servers in Germany) and analysed by Mapp Digital c/o Webtrekk GmbH. The collected usage data is anonymised at Mapp Digital c/o Webtrekk GmbH by truncating the IP address. The truncated IP address is then deleted without undue delay. This means that Mapp Digital c/o Webtrekk GmbH cannot trace you as a user of our websites.

The shortened IP address is required solely for the purpose of session identification and for geolocation (down to city level) and is deleted immediately afterwards. 

Objection and removal option
The cookies set by Mapp Digital c/o Webtrekk are classified as statistical cookies. You can change the cookie settings in the cookie banner at any time or grant or revoke your consent retrospectively. To do so, simply check or uncheck the “Statistical” checkbox in the cookie banner and click “Confirm selection”.
The purpose of the cookies used can be found in the table in Paragraph 4.5.2.

When deactivated in the cookie banner, session-based data is collected in the course of anonymous tracking. There is no cross-session- and cross-device or personal identification. A personal reference, i.e. drawing conclusions to a specific natural person, is excluded at all times.
At no time will collected data be used for marketing purposes.
Further information on data protection at Mapp Digital c/o Webtrekk GmbH can be found at

Legal basis for data processing 
The legal basis for the processing of the, anonymized, analysis data is a legitimate interest pursuant to Art. 28 GDPR and Art. 6 (1f) GDPR. We have a legitimate interest in analysing the abovementioned statistics to adapt our website to the needs of our website users, to guarantee user-friendliness and in using them for internal market research. The provision of this Data is not mandatory and there is no requirement to enter into a contract with us. If you do not give us your consent to set cookies, we perform the measurement completely anonymously on the basis of Art. 6 (1f).

4.5.4 The use of Google AdWords Conversion tracking

We use Google AdWords in order to draw attention to our products and special offers with the help of advertising on external websites. This allows us to determine how successful the individual advertising
measures are.

This kind of advertising material is delivered by Google using so-called Ad Servers. Here we use Ad Server cookies which allow specific parameters for measuring success, such as the number of pop- ups or how many clicks the advertisement had. If you get on to our website via a Google ad then Google AdWords will save a cookie on your computer or device. Validity of marketing cookies (see 4.5.2). Data used for analysis purposes is usually saved from this cookie (cookie ID, the number of Ad Impressions per positioning (frequency), last Impression as well as opt-out information, which serves as an indicator that the user does not want to receive customized advertising.

These cookies allow Google to recognize your browser. If a user visits specific internet pages of an AdWords’ customer and the cookie saved on the computer or device has not yet expired, both Google and the AdWords customer can see that the user has clicked on the advertisement and was redirected to this page. Every AdWords customer is assigned a different cookie; cookies cannot be traced back via the internet pages of the AdWords customer. We ourselves do not process any data with regards to these advertising measures. We simply receive statistical evaluations from Google. These evaluations allow us to identify which marketing measures are effective.

Because of the marketing tools used, your browser automatically forms a direct connection with the Google server. We have no influence over the further processing of data by Google. Due to the integration of AdWords Conversion, Google gets the information that you have accessed a certain part of our website or that you have clicked on one of our advertisements. If you are registered on any Google services, Google can allocate this browsing to your account. Even if you are not registered to Google or are not logged in at the time, there is still a possibility that the provider is processing your IP address.
The legal basis for this is Article 6, Paragraph 1f) of the DSGVO and if you have given your consent Article 6, Paragraph 2a) of the DSGVO. We are pursuing our interest in providing you with relevant advertising whilst at the same time keeping our advertising costs to a fair level. The disclosure of data to Google is not obligatory or necessary to enter into a contract with us.

Cookies used for Adwords Conversion come under the cookie category marketing. You have the possibility at any time to change the cookie settings in the cookie banner on or to give or revoke consent at a later date (see 4.5.2). To either activate or deactivate this simply click or unclick the box marketing in the cookie banner and confirm.

You can find further information about data protection at Google here:,

4.5.5. Social Media Platforms

As an operator of several Facebook fan pages and accounts on various social media platforms, we refer to the applicable data protection regulations of Facebook, Twitter, Instagram etc. For this purpose, we only use the functions which Facebook and other platforms make available to us in order to operate these pages. This includes evaluation and analysis possibilities regarding use of the site and all administration possibilities with regards to design and presentation of the pages.

Ernst Klett Sprachen operates its services on these platforms in compliance with the data protection regulations of the respective platform provider and holds no direct responsibility for their data handling. Any insights gleaned from this data are used solely for internal purposes and direct consultation as well as for responding to your comments or messages. Ernst Klett Sprachen would like to point out that these platforms are public per se and therefore, as a rule, posts can be read by all users. Privacy policy for the use of YouTube

The publisher uses the video sharing service YouTube, LLC, 901 Cherry Ave., San Bruno, CA 94066, USA („YouTube“) to present its videos.

Provided that the YouTube videos are linked directly on the publisher’s website, the content of the embedded YouTube videos will be directly transmitted to the customer’s browser. Simultaneously, certain data from the customer’s browser will be transmitted to YouTube. This happens regardless of whether the customer clicks on the video or not. The publisher has no control over the volume of data that YouTube collects in this way. Based on current information available to the publisher, it concerns the following data, in particular regarding the presentation of embedded YouTube videos:

1. pages viewed on our website that contain the video

2. data generally transmitted by the customer’s browser (IP address, browser type and version, operating system, time of day)

3. if the customer is registered and logged on to YouTube or Google, their user ID

Embedded YouTube videos can also be disabled using browser add-ons, so that no data collection takes place through YouTube.

The videos are displayed on the basis of consent in accordance with Art. 6 Para. 1 a) DSGVO via the consent management. The user has the option to withdraw his consent to the YouTube cookies at any time by deactivating the "marketing cookies" in the cookie banner via the "Configure" button or by deactivating all cookies that are not required via the "Decline all" button (see 4.5.2 Cookies). Meta (Facebook, Instagram etc.)

EKS has an Facebook and an Instagram account (DELTA brand). The Facebook data protection regulation applies to this account ( Twitter

EKS operates a Twitter channel (DELTA brand). The data protection provisions of Twitter apply to the channel (

5. Rights of data subjects

If we process your data then you are a data subject in accordance with the DSGVO and you are entitled to the following rights. Any claims concerning these rights should be directed by email to or by post to the addresses referred to in points 2 and 3.

5.1 Right of access and data portability

In accordance with Article 15 of the DSGVO, you have the right to request information about:

  • if and what kind of data we have saved about you and for what purpose
  • from where we obtained this data
  • the recipients or categories of recipients with whom the data may be shared.

According to Article 21 of the DSGVO you have the right to receive information about any personal data shared with us due to giving consent in the case of automated processing taking place. At your request and provided it is technically feasible, we will transmit this data to a third party.

5.2 Right of rectification

You have the right to have your data rectified and/or, if necessary, updated if it is inaccurate or incomplete (Article 16 of the DSGVO).

5.3 Right to erasure and blocking

You have the right to have your data erased subject to the conditions of Article 17 of the DSGVO or blocked subject to the conditions of Article 18 of the DSGVO. If you delete your customer account with us we will delete your data, unless it is necessary to save the data in order to fulfill outstanding contracts, establish legal claims or meet legal obligations.

5.4 The right to object

Insofar as we use data to safeguard our interests exclusively on the basis of Article 6, Paragraph 1f) of the DSGVO, you have the right to object to the use of your data for reasons personal to you. If you exercise this right, we will no longer process the data concerned unless it can be proven that there are compelling legitimate reasons to process your data, which override the interests, rights and freedoms of the individual or if the processing of the data is necessary for the enforcement of legal claims.

Furthermore, you can object to the processing of your data for advertising purposes at any time, without incurring any costs other than the basic cost of transmitting this message. You can object to the sending of promotional emails at any time, free of charge, for example by clicking on the appropriate unsubscribe link at the bottom of the email. Objection to receiving promotional emails does not lead to unsubscribing from the newsletter, in accordance with 4.4

5.5 The right to withdraw consent

If you have given consent for the use of your data, you can withdraw this consent at any time. The withdrawal of consent can be sent by email to

The withdrawal of consent shall not affect the lawfulness of processing based on consent before its withdrawal. We will then delete your data, provided that we are not legally obliged or authorized to do otherwise.

5.6 The right to make a complaint at a supervisory authority

You have the right to make a complaint at a supervisory authority, notably at the Landesbeauftragten für den Datenschutz und die Informationsfreiheit Baden-Württemberg, Lautenschlagerstraße 20, D-70173 Stuttgart (the office for data protection and freedom of information).

6. Links

Whenever we refer to external Internet sites not operated by us, in the form of links on the website www.deltapublishing, we are not responsible for compliance with data protection regulations on these websites.

7. Security

Personal data that is exchanged between the customer and publisher via our website is transmitted in encrypted form only. In addition, we have technical and procedural safeguards in place to protect your data from tampering, loss, destruction and unauthorized access. Please be aware that if you contact us by email, we cannot guarantee data protection and we therefore recommend that you send any confidential information through the post.

Last updated:  04.09.2023