For more detaileddocumentation, refer tovisit the [official <span class="application">Thunderbird</span> help [*Thunderbird* Support](https://support.mozilla.org/en-US/products/thunderbird) website.
With a Primary Password, your private key is encrypted in your *Thunderbird* profile and is only unlocked while *Thunderbird* is running.If your *Thunderbird* profile is stored in your Persistent Storage, then your private key is encrypted twice: once by *Thunderbird* in your profile and a second time by the encryption of the Persistent Storage.
