Cookie Policy

Last updated: March 3, 2023

This Cookie Policy explains how Plume Design, Inc. (“Plume” or “we”) uses cookies, web beacons, and similar technologies (collectively “Cookies”) in connection with (the “OpenSync Site”) and your choices about cookies. This Cookie Policy shall be read in conjunction with our Privacy Policy . This Cookie Policy is applicable regardless of how you access and make use of the OpenSync Site.

What are cookies, web beacons and similar technologies?


Cookies are small data files stored on your hard drive by a website. They contain information that is transferred to your computer’s hard drive when you make use of the OpenSync Site.

The different types of cookies include:

(i) session cookies which expire at the end of your session (e.g., when closing your browser) and enable Plume to track your activities during a particular session

(ii) persistent cookies which remain stored on your device between sessions for a predetermined period of time and enable Us, for example, to track your settings or activities on the OpenSync Site

(iii) first-party cookies which are set by Plume

(iv) third-party cookies are set by a provider other than Plume

Web beacons

Web beacons (also known as pixel tags or clear GIFs) are small graphic images that are used in connection with the provision of the OpenSync Site, and which typically work in conjunction with cookies to track the use of the OpenSync Site by users. For example, when Plume sends you emails, web beacons allow Plume to track if you open the email and the links you click, which helps us measure campaign performance and improve features.

Other tracking technologies

Other tracking technologies enable Plume to track user behavior, such as by local shared objects or local storage, such as flash cookies, HTML 5 cookies and other web application software methods, all of which store information in your browser or device. Additionally, other technologies that function without local storage in your device and instead make use of, inter alia, browser functions. In this context, a “fingerprint” of your system is created that serves as a unique identifier.

To learn more about Cookies, visit

Why does Plume use Cookies?

We use Cookies to collect information about your browsing activities (including your browser type, operating system version, domains, IP address, the URL of the page that referred you, referring/exit pages, the different actions you performed, such as page views, how you interact with the OpenSync Site and with third party links, traffic, and usage trends), and to distinguish you from other users of the OpenSync Site. This aids your experience when you use the OpenSync Site and allows us to improve the functionality of the OpenSync Site.

When you use the OpenSync Site, we collect certain information by automated means, using technologies such as Cookies and browser analysis tools We may use Cookies to make sign-in and usage more efficient and to tailor your browsing preferences and improve the functionality of the OpenSync Site. Cookies can be used for performance management, collecting information on how the OpenSync Site is used for analytics purposes. They can also be used for functionality management, enabling us to make the user’s visit more efficient by, for example, remembering language preferences, passwords, and log-in details.

We may also use pixel tags, click-through URLs, and web beacons on the OpenSync Site. These are tiny graphic images placed on web pages or in our emails that allow us to determine whether you have performed a specific action. When you access these pages or open or click an email, the pixel tags and web beacons generate a notice of that action. These tools allow us to measure responses to our communications and improve our web pages.

What types of Cookies do we use?

We use session Cookies to keep you logged in while you use features of the OpenSync Site; these disappear after you close your browser. We also use persistent Cookies, which stay in your browser and allow us to recognize you when you return to the OpenSync Site.

We use the following Cookies on the OpenSync Site:

Essential Cookies (Strictly Necessary). Essential cookies are required to enable basic website functionality.

Personalization Cookies (Functional): These cookies remember choices you make to provide you with a customized experience and to remember your preferences (for example, your choice of language or region).

Analytics Cookies. We also use Cookies for analytical purposes to better understand how you use the OpenSync Site and how you navigate through the OpenSync Site to measure the effectiveness of our customer communications, to diagnose and fix technology problems, and otherwise enhance the OpenSync Site. We may use our own analytics Cookies or third-party analytics providers to collect and process certain data analytics on our behalf.

Marketing Cookies. We allow third-party advertising partners to use Cookies on the OpenSync Site to collect information about your browsing activities over time and across websites. We also work with these third-party advertising partners to market OpenSync to you on other websites, apps, and online services. For example, we use advertising services provided by third-party ad partners, such as Google Ads. Through a process called “retargeting”, each service places a Cookie on your browser when you visit the OpenSync Site so that they can identify you and serve you ads on other websites around the web based on your browsing activity and therefore more relevant to you and your interests. They also can limit the number of times you see an advertisement and measure the effectiveness of advertising campaigns.

How can you block Cookies?

Most Internet browsers automatically accept Cookies, but you may be able to change the settings of your browser to stop accepting Cookies or to prompt you before accepting a cookie from the websites you visit. If you set your browser to reject Cookies, parts of the OpenSync site may not work for you. Additionally, some of our advertising partners are members of the Network Advertising Initiative or the Digital Advertising Alliance. If you prefer to not receive targeted advertising, you may be able to opt out of some network advertising programs by visiting the Digital Advertising Alliance Opt-Out Page ( and the Network Advertising Initiative Opt-Out Page (!/). Depending on your type of device browser or browser, it may not be possible to delete or disable all Cookies and similar technologies on your device. Your selection of the “Do Not Track” option provided by your browser may not have any effect on our collection of cookie information for analytic and internal purposes, as we do not respond to Do Not Track signals. To learn more about browser tracking signals and Do Not Track please visit

You can change your browser settings to block or notify you when you receive a Cookie, delete Cookie, or browse the OpenSync Site using your browser’s anonymous usage setting. Please refer to your browser instructions or help screen to learn more about how to adjust or modify your browser settings. If you do not agree to our use of Cookies or similar technologies which store information on your device, you should change your browser settings accordingly. You should understand that some features of the OpenSync Site may not function properly if you do not accept Cookies or these technologies.

By using the OpenSync Site, you consent to our use of Cookies and our processing information collected through such Cookies, in accordance with this Cookie Policy and our Privacy Policy. If you are located in the EEA, Switzerland or UK, please note in particular that information generated by certain cookies about use of the OpenSync Site is transmitted to and stored on servers in the United States. You can withdraw your consent at any time by deleting placed Cookies and disabling Cookies in your browser, or as explained below. Where required by applicable law, you will be asked to consent to certain Cookies and similar technologies before we use or install them on your computer or other device.

Your choices


You can decide to what extent we may use Cookies within your use of the OpenSync Site. Your choice options will depend on the purposes for which we use such Cookies.

You can use the Cookie Consent Manager to tell Plume whether you consent to the use of cookies, web beacons, and similar technologies for marketing, personalization and analytics purposes.

We may use your personal information for targeted advertising (also known as “sharing” under California law) but provide an opt-out option in our Cookie Consent Manager. You must exercise your “Do Not Sell or Share My Personal Information” preferences from each browser you use and on each device that you use. Since your browser opt-out is designated by a cookie, if you clear or block cookies, your preferences will no longer be effective and you will need to enable them again via our Cookie Consent Manager. Beware that if you use ad blocking software, our cookie banner may not appear when you visit the OpenSync Site and you may have to use the link in the footer to access the tool.

You also may deactivate the use of Cookies that we use within the provision of the OpenSync Site by using the settings in your browser or device, if this is supported by your browser or device. The settings must be made separately for each browser you use. Please note that you may not be able to use certain OpenSync Site when you deactivate Cookies.

If you delete all Cookies on your device, any opt-out Cookies that have already been set will also be deleted, so that you will have to declare again any opt-outs that have already been declared.

Any questions?

We welcome all requests, suggestions and questions concerning our use of your information. All such communication should be directed to [email protected]. You can also write to us at: Plume Design, Inc., 325 Lytton Ave., Palo Alto, CA 94301. 205