I'm not sure that's true. My Thunderbird just has the following options:
Default encryption setting when sending messages: - Never (do not use encryption) - Required (can't send message unless all recipients have certificates) Again, all-or-nothing. A third option would be nice: - Sometimes (encrypt if valid key is found, do not if a key is not found) On 7 January 2011 14:40, Mikael Bak <mik...@t-online.hu> wrote: > IT geek 31 wrote: >> >> Outlook is all-or-nothing - it can force encryption for all >> recipients, regardless if they have a certificate or not, or none at >> all. >> > > Thunderbird and Enigmail can encrypt by default if a valid key is avalable. > > HTH, > Mikael >