[Evolution] How to digitally sign emails using certificate

[Jean-Noel Colin <jnc oxys be>]

Hi

I would like to know if (and how) it is possible to digitally sign
emails using certificates, not PGP or GPG?

Thanks a lot
        
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Jean-Noel Colin                                    E-Mail: jnc oxys be
OXYS SPRL                                          URL:
http://www.oxys.be
Rue Trigaux 210                                    Tel/Fax: +32 (0)64
55.87.85.
B-7170 Fayt-lez-Manage
Belgium