If you used *Enigmail* before Tails 4.13, follow the instructions below to migrate from *Enigmail* to *Thunderbird* 78. Tails does not include *Enigmail* 2.2, the last version of the extension, which automates this migration.
With a Primary Password, your private key is encrypted in your *Thunderbird* profile and 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.