Hi i am using Thunderbird 45.4.0 on Ubuntu 16.10. I have one email account parametrized, [email protected]. For this email account, I have two Ids (say [email protected]), the one corresponding the email account, and the professional one ([email protected]). With these two Ids, I am signing emails using enigmail, with two different keys. I have parametrized Thunderbird so that I am using the corresponding key to generate a signature automatically. For the [email protected], I can send the email directly from my computer. When I am sending email with the personal account [email protected], I am told the passphrase is missing, I have to save the message in the draft folder, open it again, and them send it, without being the error message again. This is annoying, and would like to know if there is a fix. Thanks in advance for your help, Best wishes, Jeremie.