[opensuse] Opportunistic encryption in Thunderbird?

Hi, I have a FinEID card with certificate and a corresponding card reader and I can sign and encrypt emails in Thunderbird just fine. What I would like TB to do is automatically also encrypt emails if it knows a certificate for the recipient. In the security settings, there's only "Never" and "Required". "Never" requires me to always select encryption manually and when I set "Required" I can't send an email without encryption. Is there any way to get TB to simply non-interactively use encryption when possible? -S -- (o_ Stefan Gofferje | SCLT, MCP, CCSA //\ Reg'd Linux User #247167 | VCP #2263 V_/_ Heckler & Koch - the original point and click interface