Thunderbird May Disclose Information To: Mozilla Affiliates: Thunderbird is a project of MZLA Technologies Corporation, a subsidiary of Mozilla Foundation and an affiliate of Mozilla Corporation, and as such, shares some of the same infrastructure. This means that, from time to time, your data (e.g., crash reports, and technical and interaction data) may be** disclosed to Mozilla Corporation and Mozilla Foundation**. If so, it will be maintained in accordance with the commitments we make in this Privacy Notice.

DNS servers, Standard Autoconfiguration URIs, and Mozilla's Configuration Database: To simplify the email set-up process, Thunderbird tries to determine the correct settings for your account by contacting Mozilla’s configuration database as well as external servers. These include DNS servers and standard autoconfiguration URIs. During this process, your email domain may be sent to Mozilla's configuration database, and your email address may be disclosed to your network administrators.

Amazon Web Services: Thunderbird uses Amazon Web Services (AWS) to host its servers and as a content delivery network. Your device’s IP address is collected as part of AWS’s server logs.

Email address providers (Desktop Only Legacy): Prior to version 128, Thunderbird partnered with Gandi.net and Mailfence to allow you to create a new email address through Thunderbird. If you choose to use this feature, your email address search terms are sent to Gandi.net and Mailfence to return available addresses. In addition, your country location is also shared to provide the correct prices. You can learn more about Gandi.net’s and Mailfence’s data practices by reading their privacy notices.

Always good to read TOS and PP of an service.