The procedure allows a user to save contacts stored within the Mozilla Thunderbird email client to an external file. This file can then be used for backup purposes, or to transfer contact information to other applications or devices. For instance, an individual might perform this action to create a copy of their contact list before upgrading Thunderbird, or to import their contacts into a new email program on a different computer.
Safeguarding crucial contact details is of paramount importance, mitigating potential data loss due to software malfunctions or hardware failures. Moreover, this capability provides the flexibility to move address data across different platforms and systems. Historically, this function has been a standard feature in email clients, reflecting the need for users to manage and control their data independently of specific software.