Which key is used when more than one are valid?

[Jean-David Beyer]

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John W. Moore III wrote:
> David Shaw wrote:
>>> On Sun, Jun 17, 2007 at 02:49:21PM -0400, Jean-David Beyer wrote:
>>>> My gnupg file that I get with edit-keys myuid
>>>> contains, among other things:
>>>>
>>>> sub  2048g/48FF0850  created: 2007-02-24 expires: 2008-02-24
>>>> sub  4096g/124E0663  created: 2007-06-17 expires: 2009-06-16
>>>>
>>>> How do I know which key is used when sending e-mail?
>>>> Or is this a Thunderbird question?
>>> GnuPG picks the subkey for you unless explicitly told which one to
>>> use.  In the above case, it would pick the second key, as it is more
>>> recent.
> 
> However, 'Account Settings' within Thunderbird does allow You to select
> which Key to use _if_ Enigmail is also Installed.
> 
> JOHN ;)
> Timestamp: Sunday 17 Jun 2007, 18:24  --400 (Eastern Daylight Time)

It allows me to pick the key, but not the sub-key, unless I am missing
something.

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