The app only processes information that is located on your system.
The app saves the Jira access information (Jira URL, user name and password) for the current user. This information is saved in the user's email profile. The password is encrypted using the Thunderbird's standard techniques.
You are encouraged to always use a master password to encrypt your own passwords in Thunderbird.
Please see here for details: How does thunderbird encrypt passwords?
When the app is used to create issues or comments, the content of the email (including attachments) is processed locally within the app. The email (including attachments) is sent to your Jira server after confirmation by the user. Only communication with the Jira server takes place.
catworkx does not process any data. catworkx does not collect any analysis data or sends data to catworkx or third parties.
Any logging will only be used for debugging purposes. Debugging information may contain personal data. Logging data is not stored anywhere. catworkx does not collect any logging data or sends logging data to catworkx or third parties.