Cookies policy
DATED: 1 Aug 2025. This Cookie policy came into effect on 1 Aug 2025. It was updated to reflect the current state of cookies related to third party services. We maintain copies of our previous policies online for archive purposes.
Introduction
Fastmail Pty Ltd (“we”, “our” or “us”) uses cookies on the following websites: fastmail.com and topicbox.com (“Website”). It’s important to read this policy alongside our privacy policy.
What is a cookie?
Cookies are small text files that are placed on your computer or mobile device by websites that you visit. They are widely used to make websites work, or work more efficiently, as well as to provide web services and functionalities for users.
Types of cookies
Cookies may be either “persistent” or “session” cookies, and we use both.
A persistent cookie consists of a text file sent by a web server to a web browser. It allows us to keep you logged in when this feature is enabled, and to collect and analyze (on an anonymous basis) the use of the Website, monitor the system, and improve operating performance. This may include storing your preferences for future visits. A persistent cookie will not be automatically deleted when the browser is closed; the browser will retain it. It will remain valid until its set expiry date, unless deleted by the user before then.
A session cookie is like a persistent cookie but is stored temporarily (during that browsing session) and expires when the web browser is closed. The Website will use a session cookie to manage logins and access to reserved features, ensuring you are logged out at the end of your session if you have set your preferences not to keep you logged in.
A complete list of the cookies we use is at the end of this policy. This list (together with the rest of this policy) is subject to change by Fastmail from time to time.
Other tracking technologies
Local Storage. When accessing the Website, we store program code, specific user preferences, and other information used to improve performance in the web browser’s local storage. All these are optional and are used to enhance the service. This information is not used for tracking or sent to the server.
Third-party analytics. There are no third-party analytics on any page for which you need to be logged in or that contain personal data such as your mail, contacts, or calendars.
Our use of cookies
We use cookies to log you in to your account securely and to provide us with anonymous information on the use of our Website. You don’t need cookies turned on to visit our marketing and help pages.
We use cookies to track your IP address and session information, including the duration of your visit and the browser you used. This information is used solely for the administration of the Website and to gather statistics, which we analyze to both improve and understand who generally uses our Website. Like all cookies, you can remove or block particular cookies at any time (see below).
Your cookie choices
The majority of browsers will let you change the settings for cookies and disable or enable them. You can reject all cookies except necessary ones, and you can get a warning whenever cookies are being used. You can delete the cookies stored on your computer and set your browser to prevent them from being stored.
It’s essential to note, however, that disabling cookies may prevent certain web services (including those on the Website) from functioning correctly. Disabling a cookie can limit the Website’s functionality, potentially resulting in the loss of access to some of its features.
To disable or delete cookies, or to receive a warning when they are being used, you can adjust your browser settings. Visit the “help” section of your browser for how to manage your cookie settings, or follow the links below:
List of cookies used
Below is a list of the cookies we set on our websites and the purpose of each:
fastmail.com
__Host-s_…– Login cookie – this is used to let you log in to the Website.__Secure-f_…– Security cookie – used as part of login and account recovery for keeping your account secure.seenlogin– Used to store if there has been a login on your current device. This helps to redirect you to our app or marketing website from our top-level domain.campaign– We use this cookie as part of our anti-fraud checks.fmtk_…– If you came to our marketing site via a particular ad or campaign on a third-party site, we set this so we can feed back individual attribution on signup and conversion.ps_xid– If you came to our marketing site via a Partnerstack referral, then we use this cookie to allow us to pay referral bonuses.
topicbox.com
s_...– Login cookie – used to allow you to log in to the Website.f_...– Security cookie – used as part of login and account recovery for keeping your account secure.
Third-party services that set cookies
When you visit our websites or purchase products or services, we use the following third-party services, which may set cookies:
Marketing activities use cookies to inform us of the effectiveness of paid advertisements we place on other sites on the internet.
Stop spam when people contact us and block automated signups.
A customer support tool to manage our help desk.