mozilla thunderbird for windows 7 64 bit

Use the Thunderbird config editor (found at the bottom of preferences/options), and search for _external_gnupg. It is the same as the last 16 characters of your primary key's fingerprint. You must make note of the primary key ID of the smartcard's key that you'd like to use. You must use the appropriate tools to prepare your smartcard for use, for example, the card must contain an appropriate key pair. You're responsible for installing all software that is required to use your Smartcard. You must ensure that Thunderbird 78 can find GPGME in the system library search path. In addition, you must ensure the GPGME C library is installed in a corresponding version. You need to download and install GnuPG yourself. If you'd like to use a smartcard with Thunderbird 78, you must perform several manual configuration steps. However, using smartcards is possible using an optional, advanced configuration mechanism. This means, in the default configuration, Thundbird does not support smartcards.

The RNP library does NOT yet support the use of smartcards for secret keys. Thunderbird 78 does NOT use GnuPG by default. How to use Thunderbird 78 with smartcards

6 Configure an email account to use an external GnuPG key.1 How to use Thunderbird 78 with smartcards.

Mozilla thunderbird for windows 7 64 bit