Me puedes escribir de vuelta cuando veas esto?
-----BEGIN PGP PUBLIC KEY BLOCK-----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Pzaj
-----END PGP PUBLIC KEY BLOCK-----
Debemos extraer el correo del receptor utilizando el PGP key que se nos entrega...
#!/usr/bin/env python
import base64, re
key = "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Pzaj"
for email in re.findall(r' <(.*?)>', str(base64.b64decode(key))):
print(email)