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Privacy Policy

Last Updated: January 1, 2021
We're serious about safeguarding your personal information. This Privacy Policy ("Policy") describes how Pubmark Inc. d/b/a BookBub ("Company") collects, uses, and shares personal information of consumer users of our websites located at and, our mobile applications ("Applications") (collectively, the "Sites") and our online services through BookBub and Chirp ("Services"). This Policy also applies to any of our other websites that post this Policy.


Who We Are.
For the purpose of applicable data protection legislation, the data controller of your personal information is Pubmark Inc., One Broadway, Cambridge, MA 02142. Our Data Protection Officer can be reached at
Must-Read Sections.
We draw your attention in particular to the sections entitled "International Data Transfer" and "Information Choices and Changes."
Changes to This Policy.
We will post any modifications or changes to our Privacy Policy on our sites and services. We reserve the right to modify the policy at any time, so we encourage you to review it frequently. The "Last Updated" legend above indicates when this policy was last changed. If we make any material changes to the policy, we will post a notice on our sites prior to those changes taking effect.


There’s a range of information we need to collect about you so that we can operate our sites. This information may include:


We use the information we collect in the following ways:


We may share your personal information as follows:


When we use the term "anonymous data," we’re referring to data and information that doesn’t permit you to be identified or identifiable, either alone or when combined with any other information available to a third party.
We may create anonymous data from the personal information we receive about you and other individuals whose personal information we collect. Anonymous data might include analytics information and information collected by us using cookies. We make personal information into anonymous data by excluding information, such as your name, that makes the data personally identifiable to you. We use this anonymous data to analyze usage patterns in order to make improvements to our sites.


If you have a social profile on BookBub, then certain information may be publicly visible, including your name and username; other users you’re following; and your reactions, ratings, and reviews that you share with other BookBub users. If you haven't created a social profile, then we may have created one for you using the information you have previously provided, including parts of your email address, to facilitate interacting with features on the site. You can control the information that is publicly visible on your profile by adjusting your privacy settings.
We urge you to be very careful when deciding to disclose your personal information, or any other information, on our sites.


We use several types of cookies on our sites:


Like many companies online, we may use services provided by Google and other companies that rely on technologies — such as cookies and web beacons — to collect information directly from your device about your browsing activities, your interactions with websites, and the device you're using to connect to the Internet. There are a number of ways to opt-out of having your online activity and device data collected through these services, which we have summarized below:
Blocking cookies in your browser.
Most browsers let you remove or reject cookies, including cookies used for interest-based advertising. To do this, follow the instructions in your browser settings. Many browsers accept cookies by default until you change your settings. If you remove or reject our cookies, it could affect how our sites work for you.
Blocking advertising ID use in your mobile settings.
Your mobile device settings may provide functionality to limit use of the advertising ID associated with your mobile device for interest-based advertising. Please check the instructions for your operating system: iOS or Android.
Using privacy plug-ins or browsers.
You can block our websites from setting cookies used for interest-based advertising by using a browser with privacy features, like Brave, or by installing browser plugins that block third-party cookies and trackers.
Platform opt-outs.
The following advertising partners offer features that let you opt-out of the use of your information for interest-based advertising:
Advertising industry opt-out tools.
You can also use these opt-out options to limit use of your information for interest-based advertising by participating companies. Because these opt-out mechanisms are specific to the device or browser on which they are exercised, you will need to opt-out on every browser and device that you use.


We use Google Analytics, a service which collects information anonymously and reports website trends without identifying individual visitors. Google Analytics uses its own cookie to track visitor interactions. To learn more about the information collected by Google Analytics, please visit


We use Google reCAPTCHA, which identifies bots by collecting hardware and software information and sending that data to Google for analysis. To learn more about Google reCAPTCHA, please visit and


You can contact us any time to opt-out of (a) promotional communications, (b) any new processing of your personal information that we may carry out beyond the original purpose, or (c) the transfer of your personal information outside the EEA. Please note that your use of some of the sites or services may be ineffective upon opt-out.
You can access the information we hold about you at any time by viewing your account on our sites or by contacting us directly.
You can also contact us to update or correct any inaccuracies in your personal information.
Your personal information is portable — i.e. you have the flexibility to move your data to other service providers as you wish.
Erase and forget.
In certain situations, for example when the information we hold about you is no longer relevant or is incorrect, you can request that we erase your data.
You may have an account on BookBub, Chirp, or both sites.
If you wish to exercise any of these rights, please contact us (BookBub, Chirp). In your request, please make clear (a) what personal information is concerned, and (b) which of the above rights you would like to enforce. For your protection, we may only implement requests with respect to the personal information associated with the particular email address that you use to send us your request, and we may need to verify your identity before implementing your request. We will try to comply with your request as soon as reasonably practicable.
When you receive promotional emails from us, you can also unsubscribe or opt-out by clicking the link at the bottom of any of the emails. You can’t opt-out of receiving administrative communications.
In order to use our sites, you need to provide us with your email address. If you cannot provide us with your email address, you cannot use our sites.


We retain personal information for as long as necessary to fulfill the purposes for which we collected it. These purposes may include satisfying any legal, accounting, or reporting requirements; establishing or defending legal claims; or fraud prevention.
To determine the appropriate retention period for personal information, we consider the amount, nature, and sensitivity of the personal information; the potential risk of harm from unauthorized use or disclosure of your personal information; the purposes for which we process your personal information and whether we can achieve those purposes through other means; and the applicable legal requirements.
When we no longer require the personal information we have collected about you, we will either delete or anonymize it or, if this is not possible (for example, because your personal information has been stored in backup archives), then we will securely store your personal information and isolate it from any further processing until deletion is possible. If we anonymize your personal information (so that it can no longer be associated with you), we may use this information indefinitely without further notice to you.


Your information, including personal information that we collect from you, may be transferred to, stored at and processed by us and other third parties outside the country in which you reside, including, but not limited to the United States, where data protection and privacy regulations may not offer the same level of protection as in other parts of the world. By using our sites, you agree to this transfer, storing or processing. We will take all steps reasonably necessary to ensure that your data is treated securely and in accordance with this Privacy Policy.
We will only process your personal information in accordance with applicable data protection and privacy laws. We need certain personal information in order to provide you with access to our sites. If you are an EU resident and you registered with us, you will have been asked to check a box indicating your agreement to provide this information in order to access our services. This consent provides us with the legal basis we require under applicable law to process your information. You maintain the right to withdraw such consent at any time. If you do not agree to our use of your personal information in line with this Privacy Policy, please do not use our sites.
You can only use Chirp if you reside in the United States or Canada.


Subject to the next paragraph, we ask that you not send us, and you do not disclose, any sensitive personal information (e.g., social security numbers, information related to racial or ethnic origin, political opinions, religion or other beliefs, health, biometrics or genetic characteristics, criminal background or trade union membership) on or through our sites or otherwise to us.
If you send or disclose any sensitive personal information to us when you submit user-generated content to BookBub, you consent to our processing and use of such sensitive personal information in accordance with this Privacy Policy. If you do not consent to our processing and use of such sensitive personal information, you must not submit such user-generated content to BookBub.


This section applies only to California residents. It describes how we collect, use and share personal information of California residents in operating our business, and their rights with respect to that personal information. For the purposes of this section, "personal information" has the meaning given in the California Consumer Privacy Act of 2018 ("CCPA") but does not include information exempted from the scope of the CCPA.
Your California Privacy Rights.
As a California resident, you have the rights listed below. However, these rights are not absolute, and in certain cases we may decline your request as permitted by law.
  • Information.
    You can request the following information about how we have collected and used your personal information during the past 12 months: the categories of personal information that we have collected; the categories of sources from which we collected personal information; the business or commercial purpose for collecting and/or selling personal information; the categories of third parties with whom we share personal information; whether we have disclosed your personal information for a business purpose, and if so, the categories of personal information received by each category of third-party recipient; and whether we’ve sold your personal information, and if so, the categories of personal information received by each category of third-party recipient.
  • Access.
    You can request a copy of the personal information that we have collected about you during the past 12 months.
  • Deletion.
    You can ask us to delete the personal information that we have collected from you.
  • Nondiscrimination.
    You are entitled to exercise the rights described above free from discrimination. This means that we will not penalize you for exercising your rights by taking actions such as denying you services, increasing the price/rate of services, decreasing service quality, or suggesting that we may penalize you as described above for exercising your rights.
How to Exercise Your Rights.
You can request to exercise your information, access and deletion rights by contacting us (BookBub, Chirp) or by emailing us (, We will need to confirm your identity and California residency to process your requests to exercise your information, access or deletion rights. We cannot process your request if you do not provide us with sufficient detail to allow us to understand and respond to it.
Personal Information That We Collect, Use and Share.
The list below summarizes how we collect, use and share personal information by reference to the statutory categories specified in the CCPA, and describes our practices during the 12 months preceding the effective date of this Privacy Policy. Categories in the list refer to the categories described above in the general section of this policy. We do not sell your personal information.
  • Identifiers.
    We collect this from Information You Give Us and Information We Get From Others. We use this information for Service Delivery, Research & Development, Marketing, and Compliance & Operations.
  • Commercial Information.
    We collect this from Information Automatically Collected. We use this information for Service Delivery, Research & Development, Marketing, and Compliance & Operations.
  • Financial Information.
    We collect this from Information You Give Us. We use this information for Service Delivery and Compliance & Operations.
  • Online Identifiers.
    We collect this from Information You Give Us, Information Automatically Collected, and Cookies. We use this information for Service Delivery, Research & Development, Marketing, and Compliance & Operations.
  • Internet or Network Information.
    We collect this from Information Automatically Collected. We use this information for Service Delivery, Research & Development, Marketing, and Compliance & Operations.
For each of the above categories, we may share this information with the following categories of third parties: Third Parties Designated by You, Our Third-Party Service Providers, Our Advertising Partners, Our Other Services, Corporate Restructurings, or Other Disclosures. For additional information on how we share this information, refer to the section above entitled "How We Share This Information".
As we explain in this Privacy Policy, we may use cookies and other tracking tools to facilitate advertising. If you would like to opt out of our (and our third-party advertising partners’) use of cookies and other tracking technologies, refer to the section above entitled "Online Tracking Opt-out Guide".


Our sites are not directed at children under 16. If a parent or guardian becomes aware that their child has provided us with information without their consent, they should contact us (BookBub, Chirp), and we will delete such information as soon as reasonably practicable.


We often receive testimonials and comments from users who have had positive experiences with our services, and we occasionally publish them. We obtain the user’s consent prior to posting any feedback on a public area of our sites.


Thanks for using our sites, and for reviewing our Privacy Policy. We welcome your comments or questions about this Privacy Policy. If you have any feedback, we encourage you to contact us (BookBub, Chirp).